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Reference

HIPAA Glossary

Definitive one-sentence definitions of every HIPAA term — PHI, ePHI, BAA, covered entity, breach notification, Privacy Rule, Security Rule, and 60+ more — each with the primary-source citation (45 CFR, NIST, HHS) you can verify against.

203 termsEvery entry cites its primary sourceUpdated 2026

A

14 terms

Advanced Persistent Threat (APT)

A sophisticated, sustained cyberattack in which an intruder establishes long-term presence in a network to exfiltrate data or maintain access, typically attributed to nation-state actors or organized criminal groups.

Healthcare is a frequent APT target because medical records have long monetization tail and patient care systems cannot be easily taken offline. APTs typically use a kill chain: reconnaissance, initial access, persistence, privilege escalation, lateral movement, exfiltration.

Anonymization

The irreversible removal of all identifiers from a dataset such that re-identification of any individual is computationally infeasible.

Stronger than HIPAA de-identification. True anonymization is rare in healthcare because most clinical data retains indirect identifiers (rare diagnoses, geographic clusters, temporal patterns). HIPAA uses de-identification, not anonymization, as its legal standard.

Audit Log

A chronological record of system activities — including access events, configuration changes, and security incidents — used to satisfy HIPAA's audit controls requirement.

Audit logs are a foundational forensic artifact for breach investigation and OCR compliance review. Most enforcement actions involve gaps in audit log coverage or retention.

Authentication

A HIPAA technical safeguard requiring covered entities to verify that a person or entity seeking access to ePHI is the one claimed.

Authentication is distinct from authorization (what the person can do once verified). HIPAA does not mandate a specific authentication method, but MFA is the current best-practice baseline and is proposed for explicit requirement in the 2026 Security Rule amendments.

Authorization (HIPAA)

A written, signed document by the patient permitting a specific use or disclosure of their PHI for purposes other than treatment, payment, or operations.

Required for most marketing communications, sale of PHI, disclosure of psychotherapy notes, and many research uses. Must include specific elements such as the PHI involved, recipients, purpose, expiration, and right to revoke.

B

7 terms

Breach Notification (60-day rule)

Requirement that affected individuals be notified of a breach without unreasonable delay and no later than 60 calendar days after discovery; HHS must be notified within 60 days for breaches of 500+ individuals.

For breaches affecting fewer than 500 individuals, HHS must be notified in an annual aggregate report by March 1 of the following year. State breach notification laws may impose stricter timelines.

Business Associate Agreement (BAA)

A written contract between a covered entity and a business associate specifying permitted uses of PHI, required safeguards, breach notification obligations, and what happens to PHI at contract end.

A BAA is required before any PHI is shared with a business associate. Missing BAAs have triggered standalone enforcement actions (the Raleigh Orthopaedic case set the precedent at $750,000 with no associated breach).

Business Continuity Plan

A documented set of procedures enabling a healthcare practice to continue operations during and after a disruptive event — natural disaster, ransomware attack, vendor outage, or pandemic.

Required as a HIPAA administrative safeguard. Should include contact trees, recovery priorities, alternate processing locations, and tested fallback procedures. Distinct from a disaster recovery plan (which focuses on IT restoration) and an incident response plan (which focuses on security events).

Business Email Compromise (BEC)

A social-engineering attack where the attacker impersonates an executive, vendor, or patient via email to trick staff into transferring funds, sharing PHI, or changing payment details.

FBI IC3 reports BEC as the highest-loss cybercrime category. Healthcare is a frequent target because billing departments process high-volume vendor and insurance transfers. Defenses include MFA, sender authentication (SPF/DKIM/DMARC), out-of-band verification policies, and staff training.

C

16 terms

California Medical Information Act (CMIA)

California state law providing additional confidentiality protections for medical information beyond HIPAA, including stricter authorization requirements and direct private right of action for patients.

Applies broadly to providers of health care, health care service plans, and contractors handling medical information in California. Penalties include statutory damages per violation and attorney's fees.

CASB (Cloud Access Security Broker)

A security policy enforcement point — on-premises or cloud-hosted — that sits between users and cloud services to enforce visibility, compliance, data security, and threat protection across cloud applications.

Healthcare CASBs (Microsoft Defender for Cloud Apps, Netskope, Zscaler) commonly enforce DLP policies for PHI in cloud applications and detect shadow IT cloud usage.

CCPA / CPRA

The California Consumer Privacy Act (2018) and California Privacy Rights Act (2023) — state laws granting California residents rights over their personal information including healthcare-related data not already covered by HIPAA.

Most PHI handled by HIPAA-covered entities is exempt from CCPA, but data created outside the HIPAA-covered relationship (wellness apps, patient portals not under a BAA, marketing data) can fall under CCPA/CPRA. Compounds with HIPAA rather than replacing it.

CIS Controls

A prioritized set of cybersecurity best practices from the Center for Internet Security, widely used as a tactical complement to NIST 800-53 and the NIST CSF.

Currently CIS Controls v8 (18 controls, 153 safeguards). Many healthcare practices use CIS Controls as a practical implementation guide because they are more actionable than NIST 800-53's catalog.

Civil Monetary Penalty (CMP)

A monetary fine imposed by HHS for HIPAA violations, ranging from $137 to $2,067,813 per violation depending on culpability tier (2024 inflation-adjusted amounts).

Tiers: Unaware ($137 minimum), Reasonable Cause ($1,379), Willful Neglect Corrected ($13,785), Willful Neglect Not Corrected ($68,928 minimum). Annual cap of $2,067,813 per identical violation category.

Conditioning of Treatment

Generally prohibited practice of conditioning treatment, payment, enrollment, or eligibility for benefits on the patient's authorization for a use or disclosure of PHI.

Limited exceptions exist for research-related treatment and disclosures necessary to determine plan eligibility.

Configuration Management

The systematic process of establishing, maintaining, and auditing the security configuration of information systems handling ePHI.

HIPAA-relevant configuration management includes baseline configurations, change control, vulnerability remediation tracking, and configuration drift detection. NIST 800-53 CM family is the authoritative control reference.

Covered Entity

A health plan, healthcare clearinghouse, or healthcare provider that transmits health information in electronic form for a HIPAA-covered transaction.

Solo practitioners, single-provider practices, dental offices, behavioral health clinics, and any provider that bills electronically — directly or through a clearinghouse — are covered entities. There is no small-practice exemption.

Cyber Insurance

Insurance coverage for losses related to cyber incidents, including breach notification costs, legal defense, regulatory fines (where insurable), business interruption, and ransomware response.

Many cyber policies now require minimum security controls (MFA, EDR, backup testing) as a condition of coverage. Carriers increasingly deny coverage for organizations that misrepresent control implementation in applications.

D

12 terms

Data Loss Prevention (DLP)

Technology that detects and prevents unauthorized transmission, sharing, or exfiltration of sensitive data — including PHI — based on content inspection and policy rules.

Healthcare DLP detects patterns like SSNs, medical record numbers, ICD codes, and named-clinical phrases in emails, file shares, and uploads. Modern DLP combines content rules with user behavior analytics. Often included in Microsoft 365 E5 / Google Workspace Enterprise / dedicated tools like Forcepoint, Symantec, and Microsoft Purview.

Data Mapping

The documented inventory of every system, vendor, and workflow that creates, receives, maintains, or transmits PHI within a covered entity's environment.

A foundational HIPAA risk-analysis input — you cannot protect what you have not inventoried. Data mapping should identify data flows, classification, storage locations, retention, and business associates involved at each step.

Data Residency

The requirement that data be stored only in specified geographic regions — typically within the United States for HIPAA-covered workloads.

HIPAA itself does not mandate US-only storage, but many practices and BAAs require it to avoid foreign-government access risk and to simplify state-law compliance. AWS, Azure, and GCP all offer US-region-only data residency commitments.

Defense in Depth

A security architecture principle of layering multiple, independent controls so that the failure of any single control does not result in a breach.

Implemented in HIPAA-compliant healthcare environments as a stack: network segmentation + WAF + endpoint detection + encryption + access control + audit logging + workforce training. The principle aligns with NIST 800-53's structured control families.

DICOM

Digital Imaging and Communications in Medicine — the international standard for medical imaging data exchange (X-rays, MRIs, CT scans, ultrasound).

DICOM files contain PHI in metadata: patient name, date of birth, accession numbers, study descriptions. DICOM servers exposed to the public internet are a documented healthcare breach vector — thousands have leaked images over the past decade.

Disaster Recovery (DR)

The IT-focused process of restoring systems, applications, and data after a disruptive event — typically measured by Recovery Point Objective (RPO) and Recovery Time Objective (RTO).

Required under HIPAA's contingency plan administrative safeguard. Cloud-based practices often achieve RPO of minutes and RTO of hours; on-premises systems vary widely. DR must be tested at documented intervals.

DKIM

DomainKeys Identified Mail — an email authentication method that uses public-key cryptography to verify that an email message was sent by an authorized sender and was not altered in transit.

Used together with SPF and DMARC to prevent email spoofing. Required component of modern email anti-phishing defense.

DMARC

Domain-based Message Authentication, Reporting and Conformance — the email-authentication policy framework that, combined with SPF and DKIM, prevents attackers from spoofing your practice's email domain.

DMARC is a structural defense against phishing and BEC attacks impersonating your domain to patients, vendors, and staff. Set DMARC to 'reject' for production domains — 'none' provides only visibility.

Downstream Business Associate

A subcontractor of a business associate that itself creates, receives, maintains, or transmits PHI — also subject to HIPAA through a BAA with the upstream business associate.

The BAA chain must continue downstream for each entity touching PHI. A covered entity's BAA with its EHR vendor does not extend to the EHR vendor's database hosting provider; that relationship requires its own BAA.

E

6 terms

Endpoint Detection and Response (EDR)

Security technology installed on workstations and servers that continuously monitors for malicious activity, blocks threats in real time, and supports forensic investigation.

Modern EDR includes behavioral analytics, ransomware rollback, and integration with SIEM/SOC workflows. CrowdStrike, SentinelOne, Microsoft Defender for Endpoint, and Sophos are widely deployed in healthcare. The 2026 Security Rule amendments are expected to require endpoint protection.

F

5 terms

FERPA

Family Educational Rights and Privacy Act — federal law protecting the privacy of student education records, which generally pre-empts HIPAA for records maintained by educational institutions on enrolled students.

Important for student health clinics: when a school operates a health clinic for its enrolled students, the records are typically FERPA-covered education records rather than HIPAA-covered PHI.

FHIR (Fast Healthcare Interoperability Resources)

The HL7 international standard for exchanging healthcare information electronically, using RESTful APIs and JSON/XML data formats. Required for several patient-access and provider-access APIs under the Cures Act.

FHIR R4 is the current US-mandated baseline. CMS rules require Medicare-participating providers to support FHIR-based Patient Access APIs. Each FHIR resource (Patient, Observation, MedicationRequest) carries PHI subject to HIPAA.

FIPS 140-2 / 140-3

US government cryptographic module validation standard — required for encryption products handling federal data and frequently demanded in healthcare procurement as proof of validated cryptography.

FIPS 140-3 is the current revision (replacing 140-2). HHS guidance to render PHI unusable explicitly references NIST-validated encryption, and FIPS 140 is the validation standard.

Firewall

A network security control that monitors and filters incoming and outgoing network traffic based on defined security rules — the foundational perimeter defense for healthcare networks.

Modern healthcare networks use next-generation firewalls (NGFW) combining packet filtering, intrusion prevention, application-aware policies, and threat intelligence. Required under HIPAA technical safeguards for transmission security.

G

3 terms

GDPR

EU General Data Protection Regulation — the European Union's comprehensive data protection law, applicable to US healthcare practices that intentionally serve EU-based patients (e.g., telehealth, medical tourism, expatriate care).

GDPR is broader and stricter than HIPAA in several respects: explicit consent requirements, 72-hour breach notification, Data Protection Officer mandates, and significant fines (up to 4% of global revenue). Most US-only practices are not GDPR-subject.

H

19 terms

H-ISAC

Health Information Sharing and Analysis Center — a non-profit member-driven organization for sharing cyber threat intelligence and best practices among healthcare organizations.

Members include hospitals, health systems, payers, pharma companies, and healthcare vendors. H-ISAC operates threat intelligence feeds, incident response coordination, and sector-wide cybersecurity exercises.

Health Information Exchange (HIE)

An electronic system or organization that facilitates the sharing of health information among providers, payers, public health agencies, and patients across organizational boundaries.

State and regional HIEs (CRISP, Manifest, Healthix) operate as business associates to participating covered entities and must execute BAAs. TEFCA is the federal framework standardizing inter-HIE connectivity.

HHS

US Department of Health and Human Services, the federal agency responsible for HIPAA regulation and enforcement through its Office for Civil Rights (OCR).

HIPAA Audit Program

OCR's periodic, random selection of covered entities and business associates for HIPAA compliance audits, conducted under authority granted by the HITECH Act.

Phase 1 (2011-2012) and Phase 2 (2016-2017) covered hundreds of organizations. OCR uses audit findings to identify systemic compliance gaps and direct enforcement priorities. Audit selections trigger document production deadlines and interview scheduling.

HIPAA Audit Protocol

OCR's published checklist of audit inquiries used during HIPAA compliance audits — covering Privacy Rule, Security Rule, and Breach Notification Rule provisions with specific evidence requirements for each.

The Audit Protocol was last comprehensively updated in 2016 for the Phase 2 audits. Independent practices can use the protocol as a self-assessment template — OCR auditors evaluate exactly what the protocol lists.

HIPAA Security Rule

Federal regulation establishing national standards for the security of ePHI through administrative, physical, and technical safeguards.

The Security Rule applies specifically to ePHI (the electronic subset of PHI). The proposed 2026 amendments would mandate encryption, MFA, network segmentation, and asset inventory.

HITRUST CSF

Health Information Trust Alliance Common Security Framework — a certifiable framework that maps HIPAA, NIST, ISO 27001, and other standards into a single auditable control set.

HITRUST certification is not equivalent to HIPAA compliance but provides a defensible third-party attestation increasingly demanded by health-system partners.

HL7

Health Level Seven — a family of international standards for electronic health information exchange, including HL7 v2 (legacy messaging), HL7 v3, CDA (Clinical Document Architecture), and FHIR (modern API standard).

Hybrid Entity

A covered entity that performs both covered and non-covered functions and chooses to designate specific health-care components as subject to HIPAA.

Universities operating both a student health center and academic departments are common examples. The designation must be documented.

I

7 terms

Identity and Access Management (IAM)

The discipline and technology layer that manages digital identities and controls user access to systems handling ePHI.

HIPAA-aligned IAM combines identity provisioning (SCIM), authentication (SSO + MFA), authorization (RBAC/ABAC), privileged access management (PAM), and lifecycle management. Mature IAM is the foundation for HIPAA access controls.

Incident Response Plan (IRP)

A documented set of procedures defining how a covered entity identifies, contains, eradicates, and recovers from security incidents involving ePHI — including breach assessment, notification timelines, and lessons-learned review.

Required under HIPAA's security incident procedures administrative safeguard. NIST SP 800-61 Rev. 2 is the canonical reference. Practices should test the IRP at least annually with tabletop exercises.

Information Blocking

Practices by healthcare providers, HIT developers, or health information networks that are likely to interfere with the access, exchange, or use of electronic health information — prohibited by the 21st Century Cures Act.

Eight exceptions exist (e.g., preventing harm, privacy, security, content/manner). Penalties: HIT developers and HINs up to $1M per violation (HHS OIG); providers subject to disincentives under separate ONC rules.

IPsec

Internet Protocol Security — a suite of protocols providing authentication, integrity, and encryption for IP packets, used to construct secure VPN tunnels and protect network-layer communications.

J

1 term

K

2 terms

Key Management

The administrative and technical processes governing the generation, distribution, storage, rotation, use, and destruction of cryptographic keys protecting ePHI.

NIST SP 800-57 is the authoritative reference. Cloud providers offer managed services (AWS KMS, Azure Key Vault, GCP Cloud KMS). Customer-managed keys (CMK) and customer-supplied keys (BYOK) provide additional control for high-sensitivity workloads.

Kill Chain (Cyber)

A model describing the stages of a cyberattack from reconnaissance to action on objectives — used to identify defensive controls at each stage and disrupt attacks before completion.

Lockheed Martin's Cyber Kill Chain has 7 stages: reconnaissance, weaponization, delivery, exploitation, installation, command and control, actions on objectives. MITRE ATT&CK is the more granular modern reference framework.

L

3 terms

Lateral Movement

An attacker technique of moving from an initial compromise point through a network to reach high-value systems — typically by exploiting credential reuse, network trust relationships, or unpatched services.

Healthcare networks are particularly vulnerable when clinical and administrative systems share flat network topology. Mitigated by network segmentation, microsegmentation, least-privilege access, and zero-trust architectures.

M

8 terms

Marketing (HIPAA)

Communications about a product or service that encourage purchase or use; generally requires patient authorization, with limited exceptions for face-to-face communications, promotional gifts of nominal value, and refill reminders.

Patient appointment reminders are typically treatment communications, not marketing. Post-visit thank-you emails with promotional content may cross into marketing.

Medical Identity Theft

The fraudulent use of an individual's personal or health information to obtain medical services, prescription drugs, or insurance benefits — a long-tail consequence of healthcare data breaches.

Unlike credit-card fraud, medical identity theft can persist for years and contaminate medical records with another person's clinical data. The average cost to victims exceeds $13,000 (Ponemon Institute data).

Microsegmentation

A network security technique that creates fine-grained isolation zones around individual workloads or applications, enforcing per-flow access policies to limit lateral movement.

Modern implementations use software-defined networking (SDN) and identity-based policies rather than traditional VLANs. Healthcare deployments commonly use microsegmentation to isolate clinical applications from administrative networks.

Mitigation

The HIPAA requirement to mitigate, to the extent practicable, any harmful effect of a use or disclosure of PHI made in violation of HIPAA policies or the BAA.

Typical mitigation actions include retrieving disclosed information, retraining the workforce member involved, and revising affected policies.

Mobile Device Management (MDM)

Technology that enrolls, configures, secures, and monitors smartphones, tablets, and laptops accessing organizational data — required for BYOD HIPAA compliance and increasingly for managed-device deployments.

Capabilities include forced encryption, screen-lock enforcement, remote wipe, app whitelisting, and conditional access based on device compliance. Microsoft Intune, Jamf, Kandji, and VMware Workspace ONE are common platforms.

mTLS (Mutual TLS)

An authentication mechanism in which both the client and the server present X.509 certificates to verify each other's identity, providing strong cryptographic authentication for service-to-service communication.

Increasingly used for API authentication in healthcare integrations (FHIR APIs, EHR connections, payer integrations). Eliminates shared-secret risk and supports zero-trust architectures.

N

6 terms

O

6 terms

Organized Health Care Arrangement (OHCA)

A clinically or operationally integrated arrangement of legally separate covered entities that holds itself out to patients as a joint provider and may share PHI internally for joint operations.

Common examples include hospital staff physician groups, group practices in academic medical centers, and multi-entity provider networks operating shared services.

OWASP Top 10

A regularly updated list of the most critical web application security risks published by the Open Worldwide Application Security Project — used as a baseline checklist for application security in healthcare technology.

Current edition (2021) includes broken access control, cryptographic failures, injection, insecure design, security misconfiguration, vulnerable and outdated components, identification and authentication failures, software and data integrity failures, security logging and monitoring failures, server-side request forgery.

P

23 terms

Patch Management

The process of identifying, testing, and applying software patches to address security vulnerabilities and bugs — required under HIPAA's evaluation administrative safeguard and proposed for explicit requirement in the 2026 Security Rule amendments.

Unpatched systems are the most common entry vector in healthcare ransomware incidents. Patch management programs should include vulnerability scanning, prioritized patching based on severity, testing procedures, and documentation of accepted-but-not-patched residual risk.

Patient Access API

A FHIR-based API that CMS-regulated payers and providers must offer to patients enabling them to retrieve their health information from a third-party app of their choice without barriers.

Required under CMS Interoperability and Patient Access Final Rule (CMS-9115-F). Patient apps connect via OAuth 2.0 / SMART on FHIR authorization. Not an authorization to bypass HIPAA — the patient is exercising their Right of Access.

Patient Portal

A secure web or mobile application that allows patients to access their health records, communicate with providers, schedule appointments, and pay bills — typically maintained by or under contract with the covered entity.

Patient portals are HIPAA-relevant infrastructure: they store and transmit PHI, require BAAs with the provider if operated by a third party, and must include audit logging, MFA, and encrypted transmission.

Penetration Testing

An authorized simulated cyberattack against an organization's systems, conducted by qualified security professionals, to identify exploitable vulnerabilities and validate the effectiveness of security controls.

Recommended annually for healthcare environments handling significant PHI volumes. Required by some payer contracts and proposed for explicit requirement in the 2026 Security Rule amendments. Distinct from vulnerability scanning, which is automated and broader but less deep.

Personal Health Information

An informal term sometimes used interchangeably with PHI, sometimes more loosely to include all health-related personal information regardless of whether it is held by a HIPAA-covered entity.

When precision matters, use 'PHI' (HIPAA-defined term, applies to covered entities and business associates) and 'health-related personal information' or 'health data' for the broader category.

Personal Health Record (PHR)

A health record that an individual maintains for themselves — distinct from a covered entity's medical record — often using consumer-facing apps, fitness trackers, or vendor-hosted PHR services.

PHRs may or may not be HIPAA-covered. A PHR offered by a covered entity is PHI. A standalone consumer PHR (Apple Health, MyChart consumer features outside a provider relationship) is typically not HIPAA-covered.

Phishing

A social-engineering attack in which the attacker impersonates a trusted entity in an email or message to trick the recipient into revealing credentials, downloading malware, or transferring funds.

Phishing is the #1 initial-access vector in healthcare breaches. Defenses include MFA, email authentication (SPF/DKIM/DMARC), workforce training with simulated phishing, and email filtering with content analysis.

Pretexting

A social-engineering technique in which the attacker creates a fabricated scenario (the pretext) to manipulate the victim into divulging information or performing an action.

Healthcare-targeted pretexting commonly impersonates IT support, HIPAA compliance officers, executives, or insurance representatives. Defense: out-of-band verification, callback procedures, workforce training.

Privacy by Design

A framework requiring privacy and data protection to be embedded into the design and architecture of IT systems and business practices, rather than added as an afterthought.

Originated by Ann Cavoukian; codified in GDPR Article 25. Increasingly referenced in healthcare procurement and emerging US state privacy laws.

Privacy Impact Assessment (PIA)

A documented analysis of how personally identifiable information is handled by a system or process, evaluating compliance with applicable privacy regulations and identifying risks.

Not strictly required by HIPAA but considered industry best practice for new systems handling PHI. Mandatory for many government healthcare systems.

Privacy Officer

A workforce member designated to develop and implement HIPAA Privacy Rule policies and procedures. Every covered entity must designate one.

In small practices the same person often serves as both Privacy Officer and Security Officer. The role is responsible for NPP maintenance, patient rights requests, complaint handling, and privacy training.

Privileged Access Management (PAM)

Technology and processes for securing, controlling, and monitoring elevated administrative access to systems handling ePHI — including vaulted credentials, just-in-time access grants, and session recording.

PAM is critical for HIPAA compliance because administrative access is the most common path used in insider-threat and APT attacks. CyberArk, BeyondTrust, and Delinea are common platforms.

Privileged Identity Management (PIM)

Technology and processes for governing the lifecycle of privileged identities — discovery, classification, monitoring, just-in-time elevation, and decommissioning of accounts with administrative access.

Sister concept to PAM (Privileged Access Management) — PIM focuses on identity governance, PAM focuses on credential vaulting and session control. Critical for HIPAA-aligned administrative oversight.

Protected Health Information (PHI)

Any individually identifiable health information held or transmitted by a covered entity or business associate, including names, dates, addresses, SSNs, medical record numbers, photos, biometric data, and any combination that could identify an individual in connection with their healthcare.

PHI includes any of 18 identifier categories listed in the Safe Harbor de-identification standard when associated with health information. The HIPAA Privacy Rule applies to PHI regardless of form (electronic, paper, oral).

Pseudonymization

A data-processing technique that replaces direct identifiers in PHI with reversible pseudonyms, where the linking key is held separately under stricter controls.

Useful for research, analytics, and software development on patient data while reducing exposure. Distinct from de-identification (where re-identification keys are destroyed) and anonymization (where re-identification is computationally infeasible). PHI under pseudonymization is still PHI under HIPAA.

Psychotherapy Notes

Notes recorded by a mental health professional documenting or analyzing the contents of a private counseling session, kept separate from the rest of the medical record and afforded stronger protection than other PHI.

Disclosure of psychotherapy notes generally requires specific patient authorization, separate from any general HIPAA authorization. Excludes medication prescriptions, session start/stop times, and other clinical summary data.

Public Health Reporting

Disclosures of PHI to public health authorities for purposes of preventing or controlling disease, injury, or disability — permitted without patient authorization under HIPAA.

Includes reportable disease surveillance, immunization registries, cancer registries, FDA adverse event reporting, and birth/death certificates. State public health reporting requirements are typically codified separately.

Q

1 term

R

11 terms

Ransomware

A type of malicious software that encrypts a victim's data and demands payment for the decryption key — the most disruptive cyberthreat to healthcare operations since 2018.

HHS treats ransomware on ePHI as a presumed breach unless the covered entity demonstrates through documented risk assessment that there is low probability of compromise. Healthcare ransomware payments routinely exceed $1M; recovery costs and downtime impact are much higher.

Re-identification

The process — or risk — of associating de-identified data back to a specific individual, either through identifiable data leaks, linkage with other datasets, or statistical inference.

HIPAA's Safe Harbor and Expert Determination de-identification methods aim to minimize re-identification risk. Disclosure of de-identified data does not require authorization; re-identification of such data without HIPAA authorization creates a violation.

Red Team

An adversarial security exercise in which a team of professionals emulates real-world attack tactics, techniques, and procedures against an organization to test detection and response capabilities end-to-end.

More comprehensive than penetration testing, which focuses on technical vulnerabilities. Red team engagements may include physical access, social engineering, and multi-week persistent operations.

Risk Analysis

HIPAA-required process of conducting an accurate and thorough assessment of potential risks and vulnerabilities to the confidentiality, integrity, and availability of ePHI held by the covered entity or business associate.

Missing or inadequate risk analyses are the most-cited deficiency in OCR enforcement actions. The risk analysis must be ongoing and reviewed at least annually.

Risk Management Plan

A documented strategy implementing the security measures identified in the risk analysis, prioritized by risk severity and resource constraints — required as a HIPAA administrative safeguard.

Distinct from risk analysis (which identifies risks) — risk management is the plan to address them. Should include accepted risks, mitigated risks, transferred risks (insurance, contracts), and avoided risks (eliminated activities).

RPO / RTO (Recovery Point / Recovery Time Objective)

Recovery Point Objective: the maximum acceptable data loss measured in time. Recovery Time Objective: the maximum acceptable downtime before systems are restored. Both define disaster-recovery service levels.

Modern healthcare environments target RPO of minutes (continuous replication) and RTO of hours for critical clinical systems. HIPAA contingency plan must specify and test these values.

S

20 terms

Sale of PHI

Disclosures of PHI in exchange for direct or indirect remuneration; generally prohibited without specific patient authorization that explicitly mentions the remuneration.

Limited exceptions include public health, research at cost, treatment, mergers and acquisitions, and disclosures to business associates for permitted purposes.

SASE (Secure Access Service Edge)

A cloud-delivered architecture combining network connectivity (SD-WAN) with cloud-native security functions (CASB, ZTNA, FWaaS, SWG) into a unified service edge.

Emerging as the dominant remote-access pattern for distributed healthcare practices replacing traditional VPN + on-premises firewall stacks. Zscaler, Netskope, and Cisco Umbrella are common platforms.

SCIM (System for Cross-domain Identity Management)

An open standard for automating the exchange of user identity information between identity providers and service providers — enabling automated provisioning, deprovisioning, and group membership management.

Critical for HIPAA-compliant user lifecycle management: when a workforce member leaves, SCIM-provisioned accounts can be deactivated centrally across all integrated systems within minutes.

Security Operations Center (SOC)

A team or facility (in-house or outsourced) responsible for continuous monitoring, detection, and response to cybersecurity incidents — operationalizing the SIEM and other detection technologies.

Many independent healthcare practices use managed SOC services (MSSP, MDR) rather than building in-house teams. The proposed 2026 Security Rule amendments are expected to require continuous monitoring capabilities.

Shadow IT

Information technology systems, applications, and services used within an organization without explicit IT or security approval — a common source of unaccounted-for PHI flows in healthcare practices.

Examples in healthcare: staff using personal Dropbox, Slack workspaces created without IT involvement, AI tools used informally by clinicians, browser-based PDF editors handling clinical documents. CASB and DLP technologies provide visibility into shadow IT.

SIEM (Security Information and Event Management)

A technology platform that aggregates security event data from across the IT environment, correlates events to identify threats, and supports incident investigation and compliance reporting.

Healthcare SIEM commonly aggregates EHR access logs, firewall events, EDR alerts, identity events, and email security signals. Splunk, Microsoft Sentinel, Elastic, and IBM QRadar are common platforms.

Single Sign-On (SSO)

An authentication scheme that allows a user to access multiple applications with one set of credentials, typically using SAML 2.0 or OpenID Connect with an identity provider.

SSO improves HIPAA compliance by centralizing authentication policy (MFA, password complexity, conditional access) and enabling rapid deprovisioning. Okta, Microsoft Entra ID, and Google Workspace are common identity providers.

SOC 2 Type I / Type II

AICPA-defined audit reports examining a service organization's controls relevant to security, availability, processing integrity, confidentiality, and privacy. Type I attests to design at a point in time; Type II attests to operating effectiveness over a period.

Widely required in healthcare vendor procurement, though SOC 2 is not equivalent to HIPAA compliance — it audits the controls a vendor claims, not specific HIPAA requirements.

Social Engineering

The use of psychological manipulation to trick people into divulging confidential information, performing unauthorized actions, or violating security policies — the most common initial-access vector in healthcare breaches.

Includes phishing, smishing, vishing, pretexting, baiting, and tailgating. Mitigated by workforce training, technical defenses (MFA, DMARC, EDR), and verification policies for sensitive transactions.

SPF

Sender Policy Framework — an email authentication method that lets domain owners specify which mail servers are authorized to send mail on behalf of their domain, helping prevent sender address forgery.

SQL Injection

A web application vulnerability in which an attacker injects malicious SQL code into application input fields, manipulating the underlying database query and potentially extracting or modifying data.

Listed in OWASP Top 10. Healthcare-specific impact: SQL injection in EHR systems, patient portals, or billing interfaces has been responsible for multiple large breaches. Mitigated by parameterized queries, input validation, and WAF rules.

SSL / TLS Deprecation

The progressive deprecation of insecure cryptographic protocols: SSL 2.0, SSL 3.0, TLS 1.0, and TLS 1.1 are now considered insecure and should not be used to protect PHI; TLS 1.2 is the minimum, TLS 1.3 the current standard.

HIPAA does not list specific TLS versions, but NIST SP 800-52 Rev. 2 (which HHS guidance references) requires TLS 1.2 minimum and recommends TLS 1.3.

State Breach Notification Laws

State-level statutes requiring notification to affected individuals and state authorities following a breach of personally identifiable information — many with timelines, content requirements, or definitions stricter than HIPAA's federal floor.

All 50 US states have breach notification laws. Healthcare providers must comply with both HIPAA federal requirements and applicable state laws. Notable state variations include California (CMIA), New York (SHIELD Act), Texas (HB 300), and Massachusetts (201 CMR 17).

Subcontractor

A business associate of another business associate; subject to HIPAA requirements through a BAA chain that mirrors the upstream agreement.

When a business associate engages a subcontractor to handle PHI, the business associate must execute a BAA with the subcontractor. The chain continues for each downstream party.

Symmetric Encryption

Cryptographic approach using the same key for both encryption and decryption — typically used for encryption-at-rest because of its speed advantage over asymmetric encryption.

AES-256 is the dominant symmetric cipher for HIPAA-protected data at rest. The challenge with symmetric encryption is secure key distribution, which is why TLS combines asymmetric (key exchange) and symmetric (bulk encryption) cryptography.

T

9 terms

Tabletop Exercise

A discussion-based simulation of a security incident or disaster scenario in which key personnel walk through their response procedures — used to test and refine incident response plans without disrupting production systems.

OCR has consistently emphasized the documentation of tested incident response procedures. Annual tabletop exercises are the practical baseline for HIPAA-aligned practices.

Threat Modeling

A structured approach to identifying, communicating, and addressing potential threats to a system — used during system design to build security in proactively rather than reactively.

Common frameworks: STRIDE (Spoofing, Tampering, Repudiation, Information disclosure, Denial of service, Elevation of privilege), PASTA, OCTAVE. Should accompany every significant system change in HIPAA-covered infrastructure.

TLS

Transport Layer Security — the cryptographic protocol used to encrypt data in transit over networks. TLS 1.2 or higher is the current standard for HIPAA-compliant transmission.

TLS 1.3 (RFC 8446) is the modern standard. TLS configurations that silently fall back to plaintext when the receiving server does not support TLS create unencrypted PHI transmission — a common email-encryption gap.

Tokenization

A data-protection technique that replaces sensitive values with surrogate tokens that have no exploitable meaning outside the tokenization system — common for protecting payment card data and sometimes PHI.

Distinct from encryption — tokens cannot be reversed mathematically; the mapping is held in a secure vault. Used in healthcare to share datasets while preserving referential integrity without exposing direct identifiers.

U

5 terms

Unstructured Data (PHI in)

PHI stored in formats not enforced by structured data schemas — free-text notes, scanned documents, PDFs, voicemails, images — typically harder to inventory, search, encrypt selectively, and de-identify.

Unstructured PHI is overrepresented in HIPAA breaches because it sits in shared drives, email attachments, and legacy file servers without the protections applied to database-backed systems.

USCDI (US Core Data for Interoperability)

The standardized set of health data elements that certified EHR systems must be able to exchange — the minimum baseline for interoperable patient records in the United States.

Maintained by ONC, updated periodically (currently USCDI v4). Includes patient demographics, allergies, problems, medications, immunizations, lab results, and clinical notes. The foundation for FHIR-based patient access APIs.

V

5 terms

VLAN (Virtual Local Area Network)

A network virtualization technique that segments a physical network into multiple logical broadcast domains — a foundational network segmentation building block.

Modern healthcare network segmentation often combines VLANs with software-defined networking and microsegmentation. VLANs alone are not sufficient for zero-trust architectures but remain a baseline control.

VPN (Virtual Private Network)

A network technology that creates an encrypted tunnel between a remote user or site and an organizational network, enabling secure remote access to internal systems handling ePHI.

Traditional VPNs are increasingly being replaced by Zero Trust Network Access (ZTNA) and identity-aware proxies that provide application-level rather than network-level access. HIPAA does not mandate a specific remote access technology.

Vulnerability Management

The continuous process of identifying, evaluating, prioritizing, and remediating security weaknesses in systems handling ePHI — including scanning, patch management, and configuration assessment.

Required under HIPAA administrative safeguards and proposed for explicit mention in the 2026 Security Rule amendments. Standard tools: Tenable Nessus, Qualys, Rapid7 InsightVM, Microsoft Defender Vulnerability Management.

W

6 terms

WAF (Web Application Firewall)

A security control that monitors, filters, and blocks HTTP traffic to and from web applications, defending against attacks targeting application logic (SQL injection, XSS, CSRF, account takeover).

Healthcare WAFs protect patient portals, EHR web interfaces, public-facing APIs, and marketing sites that may capture PHI. Cloudflare, AWS WAF, F5, and Imperva are common platforms.

Whaling

A targeted phishing attack against high-value individuals — typically executives, physicians, or finance staff — often involving extensive research to make the lure credible.

Whaling overlaps with BEC and is responsible for many high-loss healthcare incidents involving fraudulent wire transfers, vendor payment redirection, and credential theft.

Willful Neglect

A category of HIPAA violation involving conscious, intentional failure or reckless indifference to the obligation to comply with HIPAA requirements. Carries the highest penalty tier under the Enforcement Rule.

Civil monetary penalty range for willful neglect not corrected: $68,928 to $2,067,813 per violation (2024 inflation-adjusted).

Workforce Member

Any employee, volunteer, trainee, or other person whose conduct in performing work for a covered entity or business associate is under the direct control of that entity, regardless of whether they are paid.

All workforce members must be trained, sanctioned for violations, and have appropriate access controls — the term is intentionally broader than 'employee.'

X

1 term

XSS (Cross-Site Scripting)

A web application vulnerability in which an attacker injects malicious scripts into web pages viewed by other users, potentially capturing credentials, session tokens, or PHI displayed in the browser.

Listed in OWASP Top 10 (A03:2021 Injection). Common in legacy healthcare web applications. Mitigated by input validation, output encoding, Content Security Policy (CSP), and modern framework auto-escaping.

Z

3 terms

Zero-Day

A previously-unknown software vulnerability that has not yet been patched by the vendor — exploitable by attackers before any defense is available.

Healthcare environments are particularly vulnerable to zero-days because clinical systems often run on legacy software that does not receive timely patches. Mitigated by defense-in-depth, network segmentation, and rapid threat intelligence.

ZTNA (Zero Trust Network Access)

A category of security products and architectures that provide secure remote access to applications based on per-request identity and context verification rather than network-perimeter trust.

Replaces traditional VPNs in modern zero-trust architectures. The user authenticates, the device state is evaluated, and the application is brokered without exposing the network. Cloudflare Access, Zscaler Private Access, and Palo Alto Prisma Access are common platforms.

#

4 terms

21st Century Cures Act

Federal law (2016) that, among other reforms, established the prohibition on Information Blocking — requiring healthcare providers, HIT developers, and health information networks to share electronic health information without unreasonable interference.

The Information Blocking Rule (45 CFR Part 171) created actionable patient-access obligations enforced by ONC and OIG. Compounds with HIPAA's Right of Access — Cures Act adds penalties for technical interference with information sharing.

405(d) / HICP

Section 405(d) of the Cybersecurity Act of 2015 directs HHS to develop consensus-based cybersecurity practices for the healthcare sector — published as Health Industry Cybersecurity Practices (HICP) and updated periodically.

HICP provides practical, voluntary cybersecurity guidance tailored to small, medium, and large healthcare organizations. The 2023 update aligns HICP with the NIST CSF and includes 10 specific threat-aligned practices. HHS treats 405(d)/HICP adherence as a mitigating factor in OCR enforcement decisions.

42 CFR Part 2

Federal regulation governing the confidentiality of substance use disorder (SUD) patient records, which imposes stricter requirements than HIPAA in many areas.

Patient consent is required for most disclosures even between treating providers, with limited exceptions for emergencies and research. The 2024 final rule aligned some provisions more closely with HIPAA while preserving heightened protections.

Definitions are the floor

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