DisclosureLens
MalwareManufacturingManufacturingRansomwareData EncryptedEmployee Data InvolvedHealth (basic)Identity (basic)Government IDPHIHighContained

Sierra Construction Company

bd_d9cad3f86323fcc0 · schema v1 · pii pii-v1

Severity

High

Discovered

Aug 14, 2024

Filed

Oct 30, 2024

To disclose

11 weeks

Affected

1,103state residents only

Linked

3 filings

Confidence

70%
Full breach record for Sierra Construction Company →

Sierra Construction Company, Inc. reported a ransomware incident affecting 1,103 Washington residents. The breach occurred between August 13-14, 2024, and was discovered on August 14, 2024. Employee data including SSNs, DOBs, and health insurance info was compromised. The company engaged legal and cybersecurity experts and offered 12 months of credit monitoring.

Washington clock⏱ WA AG >30d11 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 · 1 days
discovery → filing · 11 weeks / 77 days

Aug 13, 2024

Begins

Aug 14, 2024

Discovered

Oct 30, 2024

Filed

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Filing propagation · 3 filings · 3 states

View merged incident ↗
Montana State AGOct 30 · first
Massachusetts State AGOct 30 · first
Washington State AGOct 30 · first · this page

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.