AccidentalProfessional ServicesProfessional ServicesMisdeliveryCustomer Data InvolvedIdentity (basic)Government IDMediumContained

SEYFARTH SHAW LLP

bd_57d5f50abcc8b80f · schema v1 · pii pii-v2

Severity

Medium

Discovered

Aug 18, 2026

Filed

Sep 18, 2026

To disclose

4 weeks

Affected

1state residents only

Linked

4 filings

Confidence

69%

Full breach record for SEYFARTH SHAW LLP →

Seyfarth Shaw, LLP notified the NH Attorney General of an incident where documents containing names and Social Security numbers were sent by email to an unauthorized recipient. The firm identified the error on August 18, 2026. One New Hampshire resident was affected. The firm confirmed no unauthorized network access occurred. Response actions included notifying the FBI, offering two years of credit monitoring via CyberScout, and implementing additional employee training.

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Incident timeline

discovery → filing · 4 weeks / 31 days

Aug 18, 2026

Discovered

Sep 18, 2026

Filed

vs. sector median

15 wks faster

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

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

California State AGbd_0ac610ae32eec44b2026-09-18Verified
Indiana State AGbd_8313def7bbfeb8bd2026-09-18Verified
Texas State AGbd_2029b60e997798fd2026-09-21 · +3dCandidate

Name: Seyfarth Shaw, LLP
norm: seyfarth shaw

Name: SEYFARTH SHAW LLP
norm: seyfarth shaw
Industry: Professional Servicesllm

Discovered: Aug 18, 2026
Materiality determined: —
Notification sent: Sep 18, 2026
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unknown
Regulator citations: Notified the FBIProviding written notice to relevant state regulators

During the incident: Took steps to confirm the security of their network
Initiated an investigation into the nature and scope of the event
Notified the FBI regarding the event
Providing access to credit monitoring services for two (2) years through CyberScout
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Providing written notice of this incident to relevant state regulators
Providing written notice to the three major credit reporting agencies, Equifax, Experian, and TransUnion
Changes made: Working to implement additional safeguards and training to its employees
Instituting additional employee training and awareness notifications
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(31 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

California State AGSep 18 · first

Indiana State AGSep 18 · first

New Hampshire State AGSep 18 · first · this page

Texas State AG+3d

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/seyfarth-shaw-20260918.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 18, 2026
Raw hash: 34a295864b0befb67798365e38b9c4b90c57fe8c3eab0622107652577afa535e

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entitySeyfarth Shaw, LLP

Victim entitySEYFARTH SHAW LLP

Incidentdiscovered Aug 18, 2026

Stated responseTook steps to confirm the security of their network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov