GLOBALMalwareHealthcareHealthcareRansomwareNightspireRansom DemandedActor NamedData ExfiltratedHigh
CERUMO Co., Ltd
bd_6e02b54b57ca8d08 · schema v1 · pii pii-v1
Full breach record for CERUMO Co., Ltd →Threat-actor claim — not a regulatory filing
This row is a claim by the ransomware group Nightspire 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.
Group activity: HealthcareClaimed data size: 0GBDiscovered: 2026-03-31
Source: Ransomware.live
Post text · scraped from the leak site
Data is not accessible for now
Tracked as a single-filing incident — the only disclosure on record for this event so far.Unverified claimView incident
No regulatory filing corroborates this yet. If an SEC 8-K, state-AG notice, or victim statement lands, DisclosureLens will merge it into an incident and link it here.
Source provenance
- Source URL
- https://www.ransomware.live/
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Feb 5, 2026
- Raw hash
- bca1b515a35135591705343bbaf4618fc98b23b2ceff7ce8bbec11099791a2d2
Reporting entity
- Name
- nightspire
Victim entity
- Name
- CERUMO Co., Ltdnorm: cerumo
- Domain
- cerumo.co.jp
- Industry
- Healthcare
What this source establishes
- Source ceiling
- A leak-site claim can't tell us: discovery date · materiality · notification · affected count · confirmed data types · compliance clock. These stay blank until a regulatory filing or victim disclosure lands.
- Attack vector
- Ransomware· nightspire
- Threat actor
- NightspireExternalFinancial
Compliance
- Compliance flags
- — (clock not assessable for this source)
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.