Greylock McKinnon Associates
bd_08e358e2c4d44d73 · schema v1 · pii pii-v1
Full breach record for Greylock McKinnon Associates →4 incidents on fileGreylock McKinnon Associates, Inc. notified Montana residents of a cyberattack detected on May 30, 2023. Forensic review confirmed on Feb 5, 2024 that names and SSNs may have been accessed. The firm engaged third-party cybersecurity specialists, notified law enforcement, and offered 12 months of credit monitoring. No specific count of affected individuals was provided in this filing.
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Incident timeline
May 30, 2023
Discovered
Feb 23, 2024
Filed
vs. sector median
+21 wks slower
Linked disclosures
Why this link?Regulatory filings (9) · sorted by filing gap
- New Hampshire State AGbd_8b8abd614469d3d92024-02-23Verified
- Maine State AGbd_e0ca51cf3adad76c2024-02-23Verified
- Indiana State AGbd_ebe27468fd5864a12024-02-23Verified
- New Hampshire State AGbd_8b7ba321f28889a02024-04-04 · +41dVerified
Show 5 more filings ↓Show fewer ↑up to 53d gap
- South Carolina State AGbd_4f59e4feb1207f512024-04-05 · +42dVerified
- Maine State AGbd_524d78fcdff1e19d2024-04-05 · +42dVerified
- Oregon State AGbd_ba7fccfadfcbb07d2024-04-05 · +42dVerified by operator
- California State AGbd_c55a125d8e9e0f582024-04-05 · +42dVerified
- Washington State AGbd_862de986dcc37c522024-04-16 · +53dVerified
Filing propagation · 10 filings · 8 states
View merged incident ↗Pattern: first filing Feb 23 (NH), 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
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.