FEDERALItem 8.01 · voluntaryMalwareTechnologyManufacturingInformationRansomwarePhishingData EncryptedTargetedLowContained

Tecogen Inc.

bd_f4d2583c15370554 · schema v1 · pii pii-v1

Severity

Low

Discovered

Apr 28, 2023

Filed

May 3, 2023

To disclose

5 days

Affected

Not disclosed

Confidence

64%

Full breach record for Tecogen Inc. →2 incidents on file

Tecogen Inc. experienced a ransomware attack on April 28, 2023, which the company said appears to have been a spear-phishing attack aimed at a specific target through the company's VPN. The company engaged IT providers, contained the threat, restored files from backups, and fully restored network operations by May 1, 2023. Remediation includes implementing MFA and reviewing IT infrastructure.

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Incident timeline

discovery → filing · 5 days

Apr 28, 2023

Begins

Apr 28, 2023

Discovered

May 3, 2023

Filed

vs. sector median

18 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Tecogen Inc.
norm: tecogen
SEC CIK: 0001537435

Name: Tecogen Inc.
norm: tecogen
SEC CIK: 0001537435
Industry: TechnologyllmManufacturingllm

Discovered: Apr 28, 2023
Breach occurred: Apr 28, 2023 – Apr 28, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: —
Attack vector: Ransomware
MITRE ATT&CK: T1566 PhishingT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial

During the incident: Contacted outside IT service providers to limit access to the network
Investigated the threat
Restored files affected by the attack from the previous evening's back-up
Removed hard disks from two affected workstations permanently from service
Changed all passwords
Conducted a full audit of user accounts
Disabled VPN access to the network pending implementation of multi-factor authentication
Required a password to access support from IT personnel and consultants
Changes made: Implementing multi-factor authentication for network access and access to workstations
Undertaking regular reviews of its IT infrastructure
Investigating improved software and hardware cyber threat protection solutions
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 days(5 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statementThis record

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://www.sec.gov/Archives/edgar/data/1537435/000153743523000036/
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: May 3, 2023
Raw hash: 8b2e2ac4507407a48c3e10de8a508d449bc3cc4fa8fd9191e286ad61f0ddd30f

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Reporting entityTecogen Inc.

Victim entityTecogen Inc.

Incidentdiscovered Apr 28, 2023

Stated responseContacted outside IT service providers to limit access to the network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.sec.gov

Source filing