AccidentalProfessional ServicesProfessional ServicesMisdeliveryCustomer Data InvolvedIdentity (basic)Government IDMediumContained

SEYFARTH SHAW LLP

bd_0ac610ae32eec44b · schema v1 · pii pii-v2

Severity

Medium

Discovered

Aug 18, 2026

Filed

Sep 18, 2026

To disclose

4 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

69%

Full breach record for SEYFARTH SHAW LLP →

Seyfarth Shaw LLP notified individuals that on August 18, 2026, a limited number of documents containing names and Social Security numbers were sent by email to an unauthorized recipient. The firm confirmed no unauthorized network access occurred. Affected individuals are offered 24 months of credit monitoring and fraud assistance.

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Incident timeline

discovery → filing · 4 weeks / 31 days

Aug 18, 2026

Begins

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

New Hampshire State AGbd_57d5f50abcc8b80f2026-09-18Verified
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
Breach occurred: Aug 18, 2026
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 18, 2026
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Attack vector: Unknown

During the incident: Promptly took steps to confirm the security of our network
Initiated an investigation into the nature and scope of the event
Offering access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing proactive fraud assistance
Changes made: 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 ↗

New Hampshire State AGSep 18 · first

Indiana State AGSep 18 · first

California 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://oag.ca.gov/ecrime/databreach/reports/sb24-629966
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: 83e4ff9d2ea58064416ec085d6eff00acef9ede36dbcac3d0de0f0efa4f178e7

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entitySEYFARTH SHAW LLP

Victim entitySEYFARTH SHAW LLP

Incidentdiscovered Aug 18, 2026

Stated responsePromptly took steps to confirm the security of our network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov