HackingProfessional ServicesProfessional ServicesCustomer Data InvolvedDelayed DiscoveryFinancial accountHealth (basic)Identity (basic)Government IDPHIHighContained

Greylock McKinnon Associates

bd_862de986dcc37c52 · schema v1 · pii pii-v1

Severity

High

Discovered

May 30, 2023

Filed

Apr 16, 2024

To disclose

46 weeks

Affected

1,323state residents only

Linked

10 filings

Confidence

68%

Full breach record for Greylock McKinnon Associates →4 incidents on file

Greylock McKinnon & Associates, a litigation support consulting firm, notified 1,323 Washington residents of a cyberattack detected on May 30, 2023. The incident compromised personal, Medicare, and health insurance information. GMA engaged forensic specialists, notified law enforcement and the DOJ, and offered 24 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d46 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

discovery → filing · 46 weeks / 322 days

May 30, 2023

Discovered

Apr 16, 2024

Filed

vs. sector median

+28 wks slower

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

South Carolina State AGbd_4f59e4feb1207f512024-04-05 · +11dVerified
Maine State AGbd_524d78fcdff1e19d2024-04-05 · +11dVerified
Oregon State AGbd_ba7fccfadfcbb07d2024-04-05 · +11dVerified by operator
California State AGbd_c55a125d8e9e0f582024-04-05 · +11dVerified

Show 5 more filings ↓up to 53d gap

New Hampshire State AGbd_8b7ba321f28889a02024-04-04 · +12dVerified
Montana State AGbd_08e358e2c4d44d732024-02-23 · +53dCandidate
New Hampshire State AGbd_8b8abd614469d3d92024-02-23 · +53dVerified
Maine State AGbd_e0ca51cf3adad76c2024-02-23 · +53dVerified
Indiana State AGbd_ebe27468fd5864a12024-02-23 · +53dVerified

Name: ROBINSON & COLE LLP
norm: robinson cole

Name: Greylock McKinnon Associates
norm: greylock mckinnon associates
Industry: Professional Servicesllm

Discovered: May 30, 2023
Materiality determined: —
Notification sent: Apr 5, 2024
Affected individuals: 1,323state-resident count only
Data types: Identity (basic)Government IDHealth (basic)Financial account
Data elements: NameSocial Security numberDate of birthHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified the United States Department of Justice

During the incident: Consulted with third-party cybersecurity specialists
Notified law enforcement
Conducted a forensic investigation
Undertook an extensive manual review of the data
Deleted DOJ data from its systems
Changes made: Offering complimentary access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services for 24 months
Providing proactive fraud assistance through Identity Force
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 46 weeks(322 days from discovery to filing)
Compliance flags: WA AG >90d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 8 states

View merged incident ↗

Montana State AGFeb 23 · first

New Hampshire State AGFeb 23 · first

Maine State AGFeb 23 · first

Indiana State AGFeb 23 · first

New Hampshire State AG+41d

South Carolina State AG+42d

Maine State AG+42d

Oregon State AG+42d

California State AG+42d

Washington State AG+53d · this page

Pattern: first filing Feb 23 (MT), last Apr 16 (WA) — a 53-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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachM16715.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 16, 2024
Raw hash: edb08348894ed34a3ea392d59fe75122b4f3827c4da038870678dc0420c7cb10

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entityROBINSON & COLE LLP

Victim entityGreylock McKinnon Associates

Incidentdiscovered May 30, 2023

Stated responseConsulted with third-party cybersecurity specialists

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com