Hamilton Construction Company
ent_5d924e9f25606742784e2e10
Disclosures
4
State AG · 4 jurisdictions
Multi-filing incidents
1
incidents joining 2+ filings here
Max affected reported
2,667
nationwide · State AG OR
Leak-site claims
0
none in sample
Identity resolution
- Canonical name
- Hamilton Construction Company
- Normalized
- hamilton construction— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- None on record
Disclosure history (4)newest first
- Oregon State AGas victim2025-12-15
Hamilton Construction Company reported a data breach to the Oregon Attorney General. The breach was reported on 2025-12-15. The breach occurred during 6/19/2025 - 6/19/2025. The breach was discovered on 6/19/2025. 2,667 individuals were affected. Notice was sent on 11/12/2025.
- Nebraska State AGas victim2025-11-12
Hamilton Construction Company experienced unauthorized network access on June 19, 2025. The incident affected 3 Nebraska residents, exposing names, Social Security numbers, and driver's license information. Hamilton notified law enforcement, credit bureaus, and provided 12 months of credit monitoring via Epiq. Notification to residents occurred on November 12, 2025.
- Montana State AGas victim2025-11-12
Hamilton Construction Company notified Montana residents of unauthorized network access on June 19, 2025. The incident involved access to files containing names and potentially other PII. The company secured the network, investigated, and offered credit monitoring services to affected individuals.
- Washington State AGas victim2025-11-12
Hamilton Construction Company experienced a ransomware cyberattack on June 19, 2025, resulting in unauthorized access to personal information including SSNs, driver's licenses, and medical data. The company notified 610 Washington residents on November 12, 2025, and provided 12 months of credit monitoring services.