Breach intelligence · MA
19 reported healthcare data breach incidents affecting 457K individuals. Sourced from 7 federal and community intelligence feeds. Updated nightly.
19
Incidents reported
457K
Individuals affected
Hacking
Top attack vector
Stable
6-month trend
Recent incidents
| Date | Entity | Individuals | Source | Severity |
|---|---|---|---|---|
| Apr 9, 2026 | High Point Treatment Center, Inc. | 25,832 | Hhs Breach | — |
| Mar 18, 2026 | Commonwealth Care Alliance | 634 | Hhs Breach | — |
| Mar 10, 2026 | Heywood Healthcare Inc. including Henry Heywood Memorial Hospital, Athol Memorial Hospital, and Heywood Medical Group, Inc. (“Heywood”) | 500 | Hhs Breach | — |
| Mar 2, 2026 | Baltimore Medical System, Inc. | 501 | Hhs Breach | — |
| Feb 2, 2026 | Middlesex Sheriff's Office | 501 | Hhs Breach | — |
| Jan 9, 2026 | Andover Eye Associates | 1,638 | Hhs Breach | — |
| Dec 25, 2025 | West Suburban Eye Surgery Center LLC | 500 | Hhs Breach | — |
| Dec 25, 2025 | North Atlantic States Carpenters Health Benefits Fund | 501 | Hhs Breach | — |
| Dec 25, 2025 | Teamsters Union 25 Health Services & Insurance Plan | 19,231 | Hhs Breach | — |
| Dec 24, 2025 | Zelis Healthcare LLC | 4,289 | Hhs Breach | — |
| Dec 24, 2025 | Anderson & Kreiger LLP | 1,607 | Hhs Breach | — |
| Dec 24, 2025 | Berkshire Health Systems, Inc. | 1,421 | Hhs Breach | — |
| Dec 24, 2025 | The Brien Center for Mental Health and Substance Abuse Services | 5,427 | Hhs Breach | — |
| Dec 24, 2025 | Picis Clinical Solutions, Inc. d/b/a Medstreaming | 500 | Hhs Breach | — |
| Dec 24, 2025 | Covenant Health | 7,864 | Hhs Breach | — |
| Dec 24, 2025 | Sensata Technologies, Inc. Health and Welfare Benefit Plan | 15,630 | Hhs Breach | — |
| Dec 24, 2025 | Next Step Healthcare LLC | 12,090 | Hhs Breach | — |
| Dec 24, 2025 | Insulet Corporation | 841 | Hhs Breach | — |
| Dec 24, 2025 | Onsite Mammography | 357,265 | Hhs Breach | — |
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Most affected entities
#1
1
incidents
634
individuals
#2
1
incidents
26K
individuals
#3
1
incidents
501
individuals
#4
1
incidents
2K
individuals
#5
1
incidents
501
individuals
Attack vectors
Breakdown of breach types reported across 19 incidents in Massachusetts. Understanding which vectors dominate helps practices prioritize their security controls.
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FAQ
Patient Protect tracks 19 reported healthcare data breach incidents in Massachusetts, affecting approximately 457K 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 14 of 19 incidents. Unauthorized Access/Disclosure is the second most common with 5 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.
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