Breach intelligence · MA
15 reported healthcare data breach incidents affecting 301K individuals. Sourced from 7 federal and community intelligence feeds. Updated nightly.
15
Incidents reported
301K
Individuals affected
Hacking
Top attack vector
Stable
6-month trend
Recent incidents
| Date | Entity | Individuals | Source | Severity |
|---|---|---|---|---|
| May 13, 2026 | Access Information Management Shared Services, LLC | 1,522 | Hhs Breach | High |
| Apr 29, 2026 | Greater Boston Urology | 4,717 | Hhs Breach | High |
| Apr 27, 2026 | Walpole Area Visiting Nurse Association, Inc. | 566 | Hhs Breach | Medium |
| Apr 16, 2026 | Community Nurse | 6,746 | Hhs Breach | High |
| Apr 16, 2026 | Guardian Home Health Care, LLC | 613 | Hhs Breach | Medium |
| Apr 9, 2026 | High Point Treatment Center, Inc. | 25,832 | Hhs Breach | High |
| Mar 18, 2026 | Commonwealth Care Alliance | 634 | Hhs Breach | Medium |
| Mar 10, 2026 | Heywood Healthcare Inc. including Henry Heywood Memorial Hospital, Athol Memorial Hospital, and Heywood Medical Group, Inc. (“Heywood”) | 500 | Hhs Breach | Medium |
| Mar 2, 2026 | Baltimore Medical System, Inc. | 501 | Hhs Breach | Medium |
| Feb 2, 2026 | Middlesex Sheriff's Office | 501 | Hhs Breach | Medium |
| Jan 9, 2026 | Andover Eye Associates | 1,638 | Hhs Breach | High |
| Jan 1, 1970 | Baystate Health and Hospitals | 12,000 | State Ag | High |
| Jan 1, 1970 | Massachusetts General Hospital | 45,000 | State Ag | High |
| Jan 1, 1970 | Mass General Brigham | 50,000 | State Ag | High |
| Jan 1, 1970 | Massachusetts General Hospital | 150,000 | State Ag | Critical |
Swipe to view full table →
Most affected entities
#1
2
incidents
195K
individuals
#2
1
incidents
566
individuals
#3
1
incidents
7K
individuals
#4
1
incidents
613
individuals
#5
1
incidents
5K
individuals
Attack vectors
Breakdown of breach types reported across 15 incidents in Massachusetts. Understanding which vectors dominate helps practices prioritize their security controls.
Massachusetts compliance requirements
Beyond federal HIPAA requirements, Massachusetts has its own breach notification law that may impose additional obligations on healthcare practices operating in the state.
Mass. Gen. Laws ch. 93H, § 3
Notification deadline
Most expedient time possible
No fixed deadline — but unreasonable delay can result in enforcement action.
Attorney General notification
Required
Massachusetts requires comprehensive written information security programs (WISPs) for all entities handling personal information — one of the most prescriptive state data security standards in the country.
Massachusetts breach notifications must include specific elements including the right to obtain a police report and a credit freeze.
This is a general reference based on current Massachusetts law. Consult legal counsel for state-specific compliance obligations. Source: Mass. Gen. Laws ch. 93H, § 3. Verified April 2026.
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FAQ
Patient Protect tracks 15 reported healthcare data breach incidents in Massachusetts, affecting approximately 301K individuals. Data is sourced from HHS OCR, State Attorney General offices, FTC enforcement, and community intelligence — updated nightly.
The most frequently reported breach vector in Massachusetts is Hacking/IT Incident, accounting for 10 of 15 incidents. Phishing is the second most common with 2 incidents.
Independent healthcare practices are the fastest-growing target for healthcare cyberattacks nationwide — attacks on small providers have increased 6x since 2021. Massachusetts practices face the same threat landscape with fewer resources to defend against it. Patient Protect provides breach prevention specifically for independent practices starting at $39/month.
Massachusetts requires breach notification within most expedient time possible, and requires notification to the Attorney General. These requirements apply in addition to federal HIPAA's 60-day notification deadline. Reference: Mass. Gen. Laws ch. 93H, § 3.
Explore the full breach intelligence dashboard with 12 analytical views, risk forecasting, and attack chain visualization.
Open full dashboardData Disclaimer: This data is aggregated from publicly available sources including the HHS OCR Breach Portal, FTC, state AG databases, CISA advisories, and curated reporting. Certain records are algorithmically modeled from news sources and labeled accordingly. Data is provided “as-is” for informational purposes only. Inclusion of any entity does not imply wrongdoing. Users must independently verify information before relying on it. See Terms of Use.
Editorial coverage · From our partner publication
Editorial analysis of the breaches and enforcement actions reshaping Massachusetts's threat landscape. From the Patient Protect publication.
May 25, 2026 · Breach
Radiology Associates of Richmond disclosed a data breach affecting 266,000 individuals after threat actors exfiltrated files containing names and protected health information from its systems.
Read on HIPAA Pulse
May 22, 2026 · Breach
Radiology Associates of Richmond disclosed a second data breach in under two years, with the latest incident affecting 266,000 patients and reported to Maine's Attorney General in May 2026.
Read on HIPAA Pulse
May 22, 2026 · Breach
Verizon's 2026 Data Breach Investigations Report finds healthcare facing a sharper threat from social engineering while ransomware and third-party vendor compromises continue to drive significant breach volume across the sector.
Read on HIPAA Pulse
May 18, 2026 · Breach
A healthcare software vendor serving the congressional physician's office was breached in early March, exposing prescription data — but lawmakers were not notified until more than two months after the intrusion.
Read on HIPAA Pulse
May 16, 2026 · Litigation
A federal jury in Michigan convicted a home health care agency owner and nurse of running a $1.6 million Medicare fraud scheme built on stolen patient records from 2018 to 2021.
Read on HIPAA Pulse
May 13, 2026 · Breach
OpenLoop Health, a telehealth platform serving independent practices and health systems, disclosed a January 2025 breach that exposed personal data belonging to roughly 716,000 individuals.
Read on HIPAA Pulse
HIPAA Pulse is the editorial publication of Patient Protect. PP’s HIPAA Response translates each story into operational guidance.
