FEDERALMalwareRansomwareData EncryptedPIIIPLowContained
Tecogen Inc.
bd_b9bff3450f42f343 · schema v1 · pii pii-v1
Full breach record for Tecogen Inc. →TECOGEN Inc. disclosed a ransomware attack on its computer network occurring on April 28, 2023, in its 10-K Item 1C. The company states the network returned to full operation on May 1, 2023, following remediation. The filing highlights reliance on third-party consultants for risk management and incident response but does not specify the scope of data exfiltration or the identity of the threat actor.
Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident
Source provenance
- Source URL
- https://www.sec.gov/Archives/edgar/data/1537435/000153743526000013/tgen-20251231.htm
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
- Filed at
- Mar 19, 2026
- Raw hash
- 682acbbd80e5834f2607a55e370d8420d01e2669a939bad2ee603034f4aaea62
Source filing
AI-assisted summary above. The structured extract on this page was generated from the document below. Inspect the source to verify or correct any field.
Reporting entity
- Name
- Tecogen Inc.norm: tecogen
Victim entity
- Name
- Tecogen Inc.norm: tecogen
Incident
- Discovered
- Apr 28, 2023
- Materiality determined
- —
- Notification sent
- —
- Affected individuals
- Not disclosed
- Data types
- PIIIP
- Attack vector
- Ransomware
- MITRE ATT&CK
- T1486 Data Encrypted for Impact
- Threat actor
- ExternalFinancial
Compliance
- Time to disclose
- 35 months(1056 days from discovery to filing)
- Compliance flags
- — (clock not assessable for this source)
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.