HackingIdentity (basic)Government IDFinancial accountMediumContained

CORPORATION SERVICE COMPANY

bd_18acd743a8c915ad · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 10, 2025

Filed

Aug 13, 2026

To disclose

12 months

Affected

61state residents only

Linked

6 filings

Confidence

66%

Full breach record for CORPORATION SERVICE COMPANY →2 incidents on file

Corporation Service Company (CSC) notified the New Hampshire Attorney General of a data event affecting 61 NH residents. Unauthorized access to a third-party hosted database occurred between August 10 and August 25, 2025. Affected data included names, SSNs, financial account info, EINs, and driver's license numbers. CSC engaged forensic specialists, completed a review by July 15, 2026, and sent notices on August 13, 2026, offering 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 12 months / 368 days

Aug 10, 2025

Begins

Aug 10, 2025

Discovered

Aug 13, 2026

Filed

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

California State AGbd_a3800fdb6c97e0dc2026-08-13Verified
Massachusetts State AGbd_b124658ed9aea1e52026-08-13Verified
Vermont State AGbd_eea5a7585b1a7acd2026-08-13Candidate
Texas State AGbd_f81c597533fb2d442026-08-14 · +1dVerified

Show 1 more filing ↓up to 12d gap

Illinois State AGbd_f8817df2ada5e6a62026-08-01 · +12dVerified

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: CORPORATION SERVICE COMPANY
norm: corporation service

Discovered: Aug 10, 2025
Breach occurred: Aug 10, 2025 – Aug 25, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 13, 2026
Affected individuals: 61state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified Office of the New Hampshire Attorney GeneralNotified the three major credit reporting agencies, Equifax, Experian, and TransUnion
Initial access: exploit_public_facing

During the incident: Launched an investigation, with the assistance of third-party forensic specialists
Engaged a third party to conduct a comprehensive and time-consuming review of the information at risk
Providing access to credit monitoring services for twelve (12) months, through TransUnion
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant regulators, as necessary, and to the three major credit reporting agencies
Changes made: Took steps to implement additional safeguards and review our policies and procedures relating to data privacy and security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 months(368 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Illinois State AGAug 1 · first

California State AG+12d

Massachusetts State AG+12d

Vermont State AG+12d

New Hampshire State AG+12d · this page

Texas State AG+13d

Pattern: first filing Aug 1 (IL), last Aug 14 (TX) — a 13-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://mm.nh.gov/files/uploads/doj/remote-docs/corporation-service-csc-20260813.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 13, 2026
Raw hash: f225e13d44451b39ec66e7fb4f42addfeaf4519e0b7aca8563f31f7c21e3a231

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityCORPORATION SERVICE COMPANY

Incidentdiscovered Aug 10, 2025

Stated responseLaunched an investigation, with the assistance of third-party forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov