UnknownProfessional ServicesProfessional ServicesCustomer Data InvolvedIdentity (basic)Government IDMedium

Singleton Schreiber

bd_e334078d6bc69eec · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jun 1, 2026

To disclose

—

Affected

Not disclosed

Linked

4 filings

Confidence

67%

Full breach record for Singleton Schreiber →2 incidents on file

Singleton Schreiber, LLP notified Massachusetts residents of a data security incident affecting client personal information, including names, SSNs, and DOBs. No evidence of misuse was found. The firm offered 24 months of free credit monitoring via Cyberscout/TransUnion. The letter is dated May 27, 2026.

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Leak gap clock⏱ Leak >30d

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Jun 1, 2026

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 4 about the same incident.View merged incident

A leak claim by silentransomgroup about this victim predates this filing by 76 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitesilentransomgroupbd_be6091e3db502b4f2026-03-16 · +76dVerified by operator

Regulatory filings (2) · sorted by filing gap

Maine State AGbd_aea361d5291092222026-06-02 · +1dVerified by operator
Indiana State AGbd_ff77d6ce544243542026-05-27 · +5dVerified

Name: Singleton Schreiber
norm: singleton schreiber
Domain: singletonschreiber.com

Name: Singleton Schreiber
norm: singleton schreiber
Domain: singletonschreiber.com
Industry: Professional Servicesllm

Discovered: —
Materiality determined: —
Notification sent: May 27, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unknown

During the incident: Offering 24 months of complimentary Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services through Cyberscout (a TransUnion company)
Providing proactive fraud assistance
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >30d
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Indiana State AGMay 27 · first

Massachusetts State AG+5d · this page

Maine State AG+6d

Pattern: first filing May 27 (IN), last Jun 2 (ME) — a 6-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://www.mass.gov/doc/2026-888-singleton-schreiber-llp/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 1, 2026
Raw hash: 486118b0b597da0e7e69388f7f4cbc65a844e079443bb3893c989a3050dfef4b

Linked disclosures

Ransomware claims (1)

Regulatory filings (2) · sorted by filing gap

Reporting entitySingleton Schreiber

Victim entitySingleton Schreiber

IncidentUnknown

Stated responseOffering 24 months of complimentary Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services through Cyberscout (a TransUnion company)

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov