AccidentalProfessional ServicesProfessional ServicesMisdeliveryCustomer Data InvolvedIdentity (basic)Government IDMediumContained

WILMER CUTLER PICKERING HALE AND DORR LLP

bd_39ac1dd623acd6ee · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 8, 2026

Filed

Jul 10, 2026

To disclose

9 weeks

Affected

42state residents only

Linked

15 filings

Confidence

65%

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

Wilmer Cutler Pickering Hale and Dorr LLP notified Massachusetts residents that on May 8, 2026, an employee mistakenly provided personal information (name and SSN) to an unauthorized third party who misrepresented their identity. The firm retained forensic experts and notified law enforcement. The incident is contained, and the firm is offering 24 months of credit monitoring via Experian.

J jump to incidentP pin to compareR raw source

Massachusetts clock⏱ MA AG >30d9 weeks discovery → filing

Incident timeline

discovery → filing · 9 weeks / 63 days

May 8, 2026

Begins

May 8, 2026

Discovered

Jul 10, 2026

Filed

vs. sector median

10 wks faster

This filing is one of 15 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

California State AGbd_0f58950e180387e02026-07-10Verified
Nebraska State AGbd_2b7cb854d3868f872026-07-10Verified
Massachusetts State AGbd_88b9137fcfba81da2026-07-10Candidate
Texas State AGbd_87849f3a47c4a66e2026-07-14 · +4dVerified

Show 6 more filings ↓up to 42d gap

Washington State AGbd_cf0f594a0df80ee92026-07-15 · +5dVerified
Oregon State AGbd_15ef8a8c27abbd122026-08-05 · +26dVerified
Delaware State AGbd_3c73f3086d75c2802026-08-12 · +33dVerified
South Carolina State AGbd_a050efd5df9ab64b2026-08-12 · +33dVerified
New Hampshire State AGbd_c3a9d4a1b18601522026-08-19 · +40dVerified
Texas State AGbd_d1414ddedb17a52d2026-08-21 · +42dVerified

Showing first 10 of 14 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: May 8, 2026
Breach occurred: May 8, 2026
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 10, 2026
Affected individuals: 42state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security numberDate of birth
Attack vector: Unknown
Threat actor: External
Regulator citations: Notified federal law enforcement authorities

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

Time to disclose: 9 weeks(63 days from discovery to filing)
Compliance flags: MA AG >30d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

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

Massachusetts State AGJul 10 · first · this page

Texas State AG+4d

Washington State AG+5d

Oregon State AG+26d

Delaware State AG+33d

South Carolina State AG+33d

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 14 — 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://www.mass.gov/doc/2026-1112-wilmer-cutler-pickering-hale-and-dorr-llp/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 10, 2026
Raw hash: f09c26a92c8bd3435fff6245389fd428c6aaca976d27bf14a160645c0c2685ef

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

Incidentdiscovered May 8, 2026

Stated responsePromptly commenced an investigation

ComplianceMA AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov