HackingProfessional ServicesProfessional ServicesStolen CredentialsCustomer Data InvolvedGovernment IDIdentity (basic)MediumContained

WILMER CUTLER PICKERING HALE AND DORR LLP

bd_3c73f3086d75c280 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Aug 12, 2026

To disclose

—

Affected

Not disclosed

Linked

14 filings

Confidence

66%

Full breach record for WILMER CUTLER PICKERING HALE AND DORR LLP →

Wilmer Cutler Pickering Hale and Dorr, LLC disclosed a data security incident on August 12, 2026, affecting individuals in multiple states. On May 8, 2026, an employee mistakenly provided client personal information (SSN, DOB) to an unauthorized third party who misrepresented their identity. The firm notified law enforcement, retained forensic experts, and is offering 24 months of credit monitoring via Experian. No fraudulent use is known.

J jump to incidentP pin to compareR raw source

Incident timeline

May 8, 2026

Begins

Aug 12, 2026

Filed

This filing is one of 14 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

South Carolina State AGbd_a050efd5df9ab64b2026-08-12Verified
New Hampshire State AGbd_c3a9d4a1b18601522026-08-19 · +7dVerified
Oregon State AGbd_15ef8a8c27abbd122026-08-05 · +7dVerified
Texas State AGbd_d1414ddedb17a52d2026-08-21 · +9dVerified

Show 6 more filings ↓up to 33d gap

Washington State AGbd_cf0f594a0df80ee92026-07-15 · +28dVerified
Texas State AGbd_87849f3a47c4a66e2026-07-14 · +29dVerified
California State AGbd_0f58950e180387e02026-07-10 · +33dVerified
Nebraska State AGbd_2b7cb854d3868f872026-07-10 · +33dVerified
Massachusetts State AGbd_39ac1dd623acd6ee2026-07-10 · +33dVerified
Massachusetts State AGbd_88b9137fcfba81da2026-07-10 · +33dCandidate

Showing first 10 of 13 linked disclosures.

Name: WILMER CUTLER PICKERING HALE AND DORR LLP
norm: wilmer cutler pickering hale and dorr

Name: WILMER CUTLER PICKERING HALE AND DORR LLP
norm: wilmer cutler pickering hale and dorr
Industry: Professional Servicesllm

Discovered: —
Breach occurred: May 8, 2026
Materiality determined: —
Notification sent: Aug 12, 2026
Affected individuals: Not disclosed
Data types: Government IDIdentity (basic)
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: notified federal law enforcement authorities
Initial access: valid_credentials

During the incident: Promptly commenced an investigation
Retained leading forensic experts to assist us
Notified federal law enforcement authorities
Offering a complimentary 24-month membership for credit monitoring and identity theft protection services through Experian
Retraining our personnel on procedures for handling personal information
Changes made: Retraining our personnel on procedures for handling personal information
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 9 states

View merged incident ↗

California State AGJul 10 · first

Nebraska State AGJul 10 · first

Massachusetts State AGJul 10 · first

Texas State AG+4d

Washington State AG+5d

Oregon State AG+26d

South Carolina State AG+33d

Delaware State AG+33d · this page

New Hampshire State AG+40d

Texas State AG+42d

Pattern: first filing Jul 10 (CA), last Aug 21 (TX) — a 42-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 13 — the full spread may be wider.

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://attorneygeneral.delaware.gov/wp-content/uploads/sites/50/2026/08/Sample-Consumer-Notice.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 12, 2026
Raw hash: 70ca5129ffbb675be20fa30603c52000978e0a2b399afc75bf2582eb4238363f

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityWILMER CUTLER PICKERING HALE AND DORR LLP

Victim entityWILMER CUTLER PICKERING HALE AND DORR LLP

IncidentUnauthorized Access

Stated responsePromptly commenced an investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceattorneygeneral.delaware.gov