BreachCensus

Massachusetts data breach notices

15,294 notices on file, filed under M.G.L. c. 93H.

15,294Notices on file

Governed by M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗

Notices by year

YearNotices
20261,559
20251,874
20241,893
20232,085
20221,972
20212,264
20201,933
20191,712
20142

Most recent notices

OrganizationReportedResidents affected
Chevy Chase Club2026-10-2030
Facial Surgery Group2026-10-201
WireCo WorldGroup2026-10-193
STS Aviation Group, LLC2026-10-19319
Murray County, Georgia2026-10-191
The Village Bank2026-10-192
Computer Task Group, Incorporated2026-10-1977
Fall River Municipal Credit Union2026-10-191
Settlement Health and Medical2026-10-1717
Frazer LLP2026-10-171
Compliance Audit Partners LLC2026-10-162
MLD Mortgage Inc. dba The Money Store2026-10-161,248
Mankato Clinic2026-10-162
ProAmpac Holdings Inc.2026-10-163
American Piping & Boiler Co2026-10-164
System Analysis & Integrations Inc.2026-10-164
fairlife, LLC2026-10-1542
City of Attleboro2026-10-152,634
City of Foster City2026-10-154
The Village Bank2026-10-152
emc CPAs LLC2026-10-1510
Law Office of Barbara L Horan2026-10-151
Minnesota Epilepsy Group, P.A.2026-10-1428
Encore Enterprises2026-10-1460
United Auto Supply2026-10-1438
Lotus Infrastructure Global Operations, LLC2026-10-141
Iroquois Memorial Hospital2026-10-14281
Webster Five Cents Savings Bank2026-10-1411
Winona County, Minnesota2026-10-1410
Mountrail County Medical Center2026-10-145
Porter & Company LLC2026-10-13385
LakeView Asset Management, LLC2026-10-132
Magna Hospitality Group2026-10-131,727
America's Food Basket2026-10-137
The Village Bank2026-10-132
JM Bullion, Inc.2026-10-131,420
Catholic Charities of Northeast Kansas2026-10-131
Citibank, N.A.2026-10-131
Eastern Bank2026-10-1351
Felician Services Inc2026-10-121
Missouri Central Credit Union2026-10-125
Park West Health System, Inc.2026-10-104
Wayne-Finger Lakes BOCES2026-10-1021
zizzl llc2026-10-0922
Lockton Companies, LLC (“Lockton”)2026-10-097
Think Big Health Care Solutions2026-10-0987
GC Consultants, Inc.2026-10-093
Womble Bond Dickinson (US) LLP2026-10-091
Sawyer Savings Bank2026-10-0972
Heuer Publishing2026-10-0917

Top organizations by notices

OrganizationNotices
Mutual One Bank390
The Village Bank317
St. Mary's Credit Union248
American Express Travel Related246
Main Street Bank210
WINCHESTER SAVINGS BANK193
Savers Bank170
Electronic162
Rockland Trust159
JPMorgan Chase Bank NA116
Wells Fargo Bank, N.A.114
Eastern Bank90
Bank of America86
Adams Community Bank82
Salem Five Cents Savings Bank73
Watertown Savings Bank59
Massachusetts General Hospital46
Eagle Bank44
Webster Five Cents Savings44
Brigham and Women's Hospital37
Dedham Savings35
TD Bank, N.A.33
Massachusetts Department of29
Ameriprise Financial, Inc.27
Capital One27
Charles Schwab & Co., Inc.26
Intuit Inc.26
Rockland trust Company26
Paper23
Wells Fargo Clearing Services, LLC23
Department of Revenue22
Discover22
The Commonwealth of22
Cape Cod Five21
Fall River Municipal Credit Union21
Raymond James Financial19
The Lash Group, LLC19
Webster Five Cents Savings Bank19
Mass General Brigham16
Citibank, N.A.15
The Vanguard Group, Inc.15
ExamOne (a Quest Diagnostics14
The Cooperative Bank of Cape14
Lincoln Financial Group13
M&T Bank13
Salem Five Bank13
Jackson National Life Insurance12
South Shore Bank12
UnitedHealthcare12
Fidelity Brokerage Services LLC11

Questions and answers

How many Massachusetts breach notices are on file?

15,294 notices are on file for Massachusetts, tied to a confirmed, visible incident on Breach Census.

When does the Massachusetts register on this site start?

The earliest notice on file for Massachusetts on Breach Census was reported in 2014.

What does the affected-resident count mean for a Massachusetts notice?

For a Massachusetts notice, the count is Massachusetts residents only, not a total.

Where do these Massachusetts notices come from?

Notices are ingested directly from Massachusetts's own breach-notification register at https://www.mass.gov/lists/data-breach-notification-reports.