DisclosureLens
HackingGovernmentGovernmentEmployee Data InvolvedIdentity (basic)Government IDMediumResolved

City of Hercules, California

bd_909dc7a9cbb31448 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 24, 2021

Filed

Apr 4, 2022

To disclose

14 weeks

Affected

Not disclosed

Confidence

65%
Full breach record for City of Hercules, California →

The City of Hercules, California experienced unauthorized access to its IT network between November 16, 2021, and December 24, 2021. The incident was discovered on December 24, 2021, when suspicious activity was detected. An unauthorized party accessed files containing names and Social Security numbers of current and former employees and contractors. The City secured its systems, launched an investigation, notified law enforcement, and implemented enhanced monitoring. Affected individuals were offered one year of complimentary Experian IdentityWorks credit monitoring.

Incident timeline

undetected · 38 days
discovery → filing · 14 weeks / 101 days

Nov 16, 2021

Begins

Dec 24, 2021

Discovered

Apr 4, 2022

Filed

vs. sector median

+4 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

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.