FEDERALItem 8.01 · voluntaryMalwareHealthcareHealthcareRansomwareData ExfiltratedCustomer Data InvolvedPHIHealth (basic)Government IDIdentity (basic)CriticalActive

Enzo Biochem Inc.

bd_58ff3a033bdf444d · schema v1 · pii pii-v1

Severity

Critical

Discovered

Apr 6, 2023

Filed

May 30, 2023

To disclose

8 weeks

Affected

2,470,000

Linked

2 filings

Confidence

68%

Full breach record for Enzo Biochem Inc. →3 incidents on file

Enzo Biochem, Inc. experienced a ransomware attack on April 6, 2023, impacting IT systems. On April 11, 2023, the company became aware that names, test information, and Social Security numbers were accessed and, in some instances, exfiltrated. Approximately 2,470,000 individuals had clinical test information accessed, with SSNs of ~600,000 potentially involved. The company disconnected systems, engaged third-party experts, and notified law enforcement. Investigation is ongoing.

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Incident timeline

discovery → filing · 8 weeks / 54 days

Apr 6, 2023

Begins

Apr 6, 2023

Discovered

May 30, 2023

Filed

vs. sector median

5 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitedispossessorbd_f9ba0dd011b0d4662022-05-18 · +376dCandidate

Name: Enzo Biochem Inc.
norm: enzo biochem
SEC CIK: 0000316253
Domain: enzo.com

Name: Enzo Biochem Inc.
norm: enzo biochem
SEC CIK: 0000316253
Domain: enzo.com
Industry: Healthcarellm

Discovered: Apr 6, 2023
Breach occurred: Apr 6, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 2,470,000nationwide
Data types: PHIHealth (basic)Government IDIdentity (basic)
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Notified law enforcement

During the incident: Deployed containment measures, including disconnecting its systems from the internet
Launched an investigation with assistance from third-party cybersecurity experts
Notified law enforcement
Adhered to its disaster recovery plan
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(54 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/316253/000121390023044007/
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: May 30, 2023
Raw hash: 585032ec340616d698e03d5c76b5e6097856eb68fe18241d0a63a4cfadeca54e

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Linked disclosures

Ransomware claims (1)

Reporting entityEnzo Biochem Inc.

Victim entityEnzo Biochem Inc.

Incidentdiscovered Apr 6, 2023

Stated responseDeployed containment measures, including disconnecting its systems from the internet

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.sec.gov

Source filing