ProSomnus Inc.
bd_9a3f8726d6d239d1 · schema v1 · pii pii-v2
Full breach record for ProSomnus Inc. →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Braincipher 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
Company description · AI-generated by the aggregator, not the leak post
ProSomnus Inc. is a U.S.-based medical device company specializing in the design and manufacture of precision oral appliances for the treatment of obstructive sleep apnea and snoring. Operating in the healthcare and medical device industry, the company focuses on sleep medicine solutions as an alternative to CPAP therapy. ProSomnus is headquartered in California, United States, and serves dental and sleep medicine professionals.
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Incident timeline — mostly unverified
? — ?
Breach window unknown
Oct 21, 2026
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
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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.
braincipher
According to ransomware.live, Brain Cipher emerged in July 2024. Both Windows and Linux variants are available. Brain Cipher using the leaked build of LockBit Black for their operations. The group suspected to have exploited CVE-2023-28252 (Microsoft Windows CLFS Driver Privilege Escalation Vulnerability). The Ransom demand ranges from $150,000 to $1,00,0000. Demand to be paid with Monero (XMR) cryptocurrency. In 2025, they have shifted their new Negotiation portal to new server with vanity TOR Domain starting with 'brain'.