Peaker Services
bd_027d318c8e73e40b · schema v1 · pii pii-v1
Full breach record for Peaker Services →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Sinobi on its public extortion blog. It has not been validated by the victim or any regulator. Treat attribution and counts as the threat actor's assertion until a regulatory filing or victim disclosure corroborates them.
Source: Ransomware.live
Post text · scraped from the leak site
Peaker Services, Inc. engages in rebuilding, repairing, and maintaining diesel engines and related equipment for railroad, power generation, and marine companies. The company also designs, assembles, and installs systems used in generator, compressor, propulsion, and mechanical drive systems; designs and installs custom control systems; and provides emergency and custom repair, case and pan repair, component and assembly rebuilding, contract maintenance, inspection, and surveying services. In addition, it engages in the distribution of power generation and control equipment. The company was founded in 1971 and is based in Brighton, Michigan with facilities in Brighton, Michigan; and New Castle, Delaware. Peaker Services, Inc. operates as a subsidiary of PSI Holding Company.
J jump to incidentP pin to compareR raw source
Incident timeline — mostly unverified
? — ?
Breach window unknown
Dec 16, 2025
Claim posted
—
No filing yet · watching
Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.
Claim → filing
—
Compliance clock
Not assessable
Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.
No regulatory filing corroborates this yet — it is the attacker's own assertion. Watch this entity to be notified the moment a filing corroborates or contradicts it.
Source ceiling
- actor name
- victim claim
- ransom/leak status
- discovery date
- materiality
- notification
- affected count
- confirmed data types
- compliance clock
The ✕ fields stay blank until a regulatory filing or victim disclosure lands.
sinobi
According to ransomware.live, Sinobi is a private vetted-affiliate RaaS group that emerged in mid-2025, believed to be a rebrand of the Lynx/INC ransomware lineage, claiming 176 victims by end of 2025 through double-extortion attacks primarily against mid-market US organizations via compromised SonicWall VPN credentials.