MalwareGovernmentGovernmentRansomwareData ExfiltratedData EncryptedCustomer Data InvolvedAuthenticationFinancial accountHealth (basic)Identity (basic)Government IDPHIHighContained

The City of Richland, Washington

bd_43717dbc90f69009 · schema v1 · pii pii-v1

Severity

High

Discovered

May 15, 2024

Filed

Oct 18, 2024

To disclose

22 weeks

Affected

1,700state residents only

Confidence

69%

Full breach record for The City of Richland, Washington →

The City of Richland, WA, filed a supplemental notice with the Washington AG regarding a cyberattack. Unauthorized access occurred May 11-15, 2024, discovered May 15, 2024. Malware encrypted systems and data was exfiltrated. Impacted data included SSNs, driver's licenses, financial accounts, and health info. 1,700 WA residents notified on Oct 31, 2024. Law enforcement notified; credit monitoring offered.

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Washington clock✗ WA AG >90d22 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

undetected · 4 days

discovery → filing · 22 weeks / 156 days

May 11, 2024

Begins

May 15, 2024

Discovered

Oct 18, 2024

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1,700 affectedView incident

Name: The City of Richland, Washington
norm: the city of richland washington

Name: The City of Richland, Washington
norm: the city of richland washington
Industry: Governmentllm

Discovered: May 15, 2024
Breach occurred: May 11, 2024 – May 15, 2024
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 31, 2024
Affected individuals: 1,700state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)Authentication
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthUnique private keyHealth insurance IDMedical information
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoingContained same day
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Provided preliminary notice to Washington Attorney General on October 18, 2024

During the incident: Notified federal law enforcement regarding the event
Providing access to credit monitoring services for one (1) year, through TransUnion
Working to implement additional safeguards and training to its employees
Changes made: Implementing additional safeguards and training to its employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 22 weeks(156 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.

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/BreachA31241.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 18, 2024
Raw hash: 9223f6a1a2a1dc2e77212107153c48b729f22aa3d12903b4b98a4092edc055bd

Reporting entityThe City of Richland, Washington

Victim entityThe City of Richland, Washington

Incidentdiscovered May 15, 2024

Stated responseNotified federal law enforcement regarding the event

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com