HackingGovernmentGovernmentCustomer Data InvolvedIdentity (basic)LowContained

City of Foster City

bd_8e3dfa7594f85b16 · schema v1 · pii pii-v2

Severity

Low

Discovered

—

Filed

Oct 15, 2026

To disclose

—

Affected

Not disclosed

Linked

2 filings

Confidence

69%

Full breach record for City of Foster City →

City of Foster City reported that an unauthorized third party accessed certain City systems between February 28, 2026, and March 25, 2026. The investigation determined that personal information, including names and potentially other data elements, may have been viewed or acquired. The City engaged a forensic firm, notified law enforcement, and is offering one year of complimentary credit monitoring to affected individuals. No misuse of personal information has been identified.

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Incident timeline

Feb 28, 2026

Begins

Oct 15, 2026

Filed

This filing is one of 2 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_9367e9e9e6a46da52026-10-01 · +14dVerified

Name: City of Foster City
norm: city of foster city

Name: City of Foster City
norm: city of foster city
Industry: Governmentllm

Discovered: —
Breach occurred: Feb 28, 2026 – Mar 25, 2026
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)
Attack vector: Unknown
Threat actor: External
Regulator citations: Notified law enforcement

During the incident: Took steps to investigate, secure our systems, and notify law enforcement
Engaged an independent forensic security firm to assist with the investigation
Conducted a review of the files potentially involved in the incident to determine whether they contained personal information
Offering a complimentary one-year membership of Experian IdentityWorks Credit 3B
Changes made: Continuing to evaluate additional measures to reduce the likelihood of a similar incident occurring in the future
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 · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGOct 1 · first

California State AG+14d · this page

Pattern: first filing Oct 1 (MA), last Oct 15 (CA) — a 14-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://oag.ca.gov/ecrime/databreach/reports/sb24-631363
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 15, 2026
Raw hash: 0d19a5cc8910d7e206bf4a58de3a63cd56cc1c92d72b44d4fa0f63653572c348

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityCity of Foster City

Victim entityCity of Foster City

IncidentUnknown

Stated responseTook steps to investigate, secure our systems, and notify law enforcement

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov