Lewis Baach Kaufmann Middlemiss PLLC
bd_874e0c804651bbbe · schema v1 · pii pii-v1
Full breach record for Lewis Baach Kaufmann Middlemiss PLLC →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Cephalus 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
coming soon
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Aug 26, 2025
Claim posted
—
Corroborated · see linked filings
This record's own dates cannot anchor compliance clocks; see the linked filings.
Claim → filing
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Compliance clock
Not assessable
Linked disclosures
Why this link?Regulatory filings (3) · sorted by filing gap
- Massachusetts State AGbd_185601dfba19cceb2026-04-29 · +245dVerified by operator
- Indiana State AGbd_35dcf19b1e14be5e2026-04-29 · +245dVerified
- Nebraska State AGbd_63ed346aba68a33d2026-04-29 · +245dVerified
Filing propagation · 3 filings · 3 states
View merged incident ↗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.
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.
cephalus
According to ransomware.live, Cephalus is a ransomware group active from mid-2025 that leverages stolen RDP credentials to deploy a Go-based ransomware payload via DLL sideloading, targeting law firms, healthcare, financial services, and IT firms across the US and Japan with 19 known victims.