Massachusetts Department of Revenue
ent_a59d8208b2bb665d57e31f0a
Disclosures
25+
State AG · 1 jurisdiction
Multi-filing incidents
4
incidents joining 2+ filings here
Max affected reported
5
as filed · State AG MA
Leak-site claims
0
none in sample
Identity resolution
- Canonical name
- Massachusetts Department of Revenue
- Normalized
- massachusetts department of revenue— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- None on record
Disclosure history (newest 25)newest first
- Massachusetts State AGas victim2026-08-04
The Massachusetts Department of Revenue issued a breach notification letter pursuant to M.G.L. c. 93H, informing individuals of an unauthorized disclosure of personal information. The letter is a template ('SAMPLE NOTICE') containing placeholders for dates and names. It offers 24 months of credit monitoring via Experian and details procedures for placing security freezes with credit bureaus. No specific attack vector, date, or count is provided in this template document.
- Massachusetts State AGas victim2026-07-16
The Massachusetts Department of Revenue (DOR) issued a breach notification letter stating that unauthorized access to personal information occurred on an unspecified date. DOR is offering 24 months of complimentary credit monitoring via Experian Identity Works and providing instructions for placing security freezes with major credit bureaus. No evidence of identity theft or fraud was known at the time of the notice.
- Massachusetts State AGas victim2026-05-12
Massachusetts Department of Revenue (DOR) issued a notice under M.G.L. c. 93H regarding an unauthorized disclosure of personal information. The incident involved identity_basic and identity_government data. DOR offered 24 months of credit monitoring via Experian. Specific dates, affected count, and cause were not disclosed in this template notice.
- Massachusetts State AGas victim2026-04-16
The Commonwealth of Massachusetts Department of Revenue notified individuals that unauthorized access occurred to their personal information. The notice is a template with placeholder dates ('DATE') and does not specify the exact date of the incident, the number of affected individuals, or the specific method of unauthorized access. The Department is offering 24 months of credit monitoring through Experian.
- Massachusetts State AGas victim2026-04-07
The Commonwealth of Massachusetts Department of Revenue notified individuals of an unauthorized disclosure of personal information. The notice states that DOR is not aware of any information suggesting the data was used for identity theft or fraud. Affected individuals are offered 24 months of credit monitoring through Experian. Specific dates, counts, and attack vectors are redacted in this sample notice.
- Massachusetts State AGas victim2026-03-24
The Commonwealth of Massachusetts Department of Revenue notified individuals of an unauthorized disclosure of personal information. The notice is a sample template containing placeholder dates and codes. The Department offered 24 months of credit monitoring through Experian. No specific attack vector, dates, or affected counts are provided in this sample document.
- Massachusetts State AGas victim2026-03-13
The Commonwealth of Massachusetts Department of Revenue notified individuals that their personal information was subject to unauthorized access. The notice states that at the time of notification, there was no evidence of identity theft or fraud. The Department is offering 24 months of complimentary credit monitoring through Experian IdentityWorks. Specific dates for the incident, discovery, or notification are redacted in this sample notice.
- Massachusetts State AGas victim2026-02-13
The Commonwealth of Massachusetts Department of Revenue notified individuals that their personal information was subject to unauthorized access. The notice states that at the time of notification, there was no evidence of identity theft or fraud. The Department is offering 24 months of complimentary credit monitoring through Experian IdentityWorks. Specific dates, affected counts, and technical details of the breach are redacted in this sample notice.
- Massachusetts State AGas victim2026-02-10
The Commonwealth of Massachusetts Department of Revenue notified individuals of an unauthorized disclosure of personal information. The notice states that DOR is not aware of any information suggesting the data was used for identity theft or fraud. DOR is offering 24 months of credit monitoring through Experian. Specific dates, counts, and attack vectors are not disclosed in this sample notice.
- Massachusetts State AGas victim2026-02-03
The Commonwealth of Massachusetts Department of Revenue notified individuals of an unauthorized disclosure of personal information. The notice states that the DOR is not aware of any evidence that the information was used for identity theft or fraud. Affected individuals are offered 24 months of credit monitoring through Experian IdentityWorks. Specific dates, counts, and attack vectors are not provided in this sample notice.
- Massachusetts State AGas victim2025-06-26
Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-06-26. 2 Massachusetts residents were affected.
- Massachusetts State AGas victim2023-04-24
Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-04-24. 1 Massachusetts residents were affected. The report records the breach type as paper.
- Massachusetts State AGas victim2023-04-21
Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-04-21. 4 Massachusetts residents were affected. The report records the breach type as electronic.
- Massachusetts State AGas victim2023-01-10
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-01-10. 1 Massachusetts residents were affected. The report records the breach type as electronic.
- Massachusetts State AGas victim2022-11-01
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2022-11-01. 5 Massachusetts residents were affected. The report records the breach type as undefined.
- Massachusetts State AGas victim2022-11-01
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2022-11-01. 1 Massachusetts residents were affected. The report records the breach type as undefined.
- Massachusetts State AGas victim2022-11-01
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2022-11-01. 3 Massachusetts residents were affected. The report records the breach type as undefined.
- Massachusetts State AGas victim2022-09-26
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2022-09-26. 1 Massachusetts residents were affected. The report records the breach type as paper.
- Massachusetts State AGas victim2022-08-25
Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2022-08-25. 2 Massachusetts residents were affected. The report records the breach type as undefined.
- Massachusetts State AGas victim2022-08-25
Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2022-08-25. 1 Massachusetts residents were affected. The report records the breach type as paper.
- Massachusetts State AGas victim2022-03-21
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2022-03-21. 1 Massachusetts residents were affected. The report records the breach type as electronic.
- Massachusetts State AGas victim2021-12-20
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2021-12-20. 1 Massachusetts residents were affected. The report records the breach type as electronic.
- Massachusetts State AGas victim2021-12-20
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2021-12-20. 1 Massachusetts residents were affected. The report records the breach type as electronic.
- Massachusetts State AGas victim2021-08-24
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2021-08-24. 1 Massachusetts residents were affected. The report records the breach type as electronic.
- Massachusetts State AGas victim2021-07-29
The Commonwealth of Massachusetts Department of Revenue reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2021-07-29. 1 Massachusetts residents were affected. The report records the breach type as paper.