HackingHealthcareFinancial ServicesHealthcareVulnerability ExploitSupply Chain (3P Vendor)Customer Data InvolvedPHIIdentity (basic)Government IDHealth (basic)MediumContained

HUMANA INC.

bd_d3125512bb3bdc78 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 29, 2025

Filed

Mar 18, 2026

To disclose

24 weeks

Affected

Not disclosed

Linked

16 filings

Confidence

64%

Full breach record for HUMANA INC. →40 incidents on file

Humana Inc. disclosed unauthorized access to internal systems in August 2025, discovered on September 29, 2025. The incident was caused by a vendor's software vulnerability involving Oracle. Affected data included names, Humana ID numbers, Social Security numbers, and medical billing/claims information. Humana worked with Oracle to address the vulnerability, notified law enforcement, and is providing 24 months of credit monitoring and identity restoration services through Equifax.

J jump to incidentP pin to compareR raw source

Massachusetts clock✗ MA AG >90d24 weeks discovery → filing

Incident timeline

undetected · 59 days

discovery → filing · 24 weeks / 170 days

Aug 1, 2025

Begins

Sep 29, 2025

Discovered

Mar 18, 2026

Filed

vs. sector median

+12 wks slower

This filing is one of 16 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Idaho State AGbd_52560034b40b0f2a2026-03-27 · +9dVerified
Texas State AGbd_22aeccc5358a90112026-04-24 · +37dVerified by operator
Idaho State AGbd_9d83c93a948631422026-04-30 · +43dVerified by operator
Illinois State AGbd_7c6eea2e34a068c22026-05-01 · +44dVerified

Show 6 more filings ↓up to 92d gap

Illinois State AGbd_8ed01c44f5316bd22026-05-01 · +44dVerified
HHS OCRbd_1b2396b69d25cc382026-05-15 · +58dVerified
Nebraska State AGbd_960ec039543338a62026-06-01 · +75dVerified
New Hampshire State AGbd_340755f98cffa7042026-06-12 · +86dVerified by operator
Massachusetts State AGbd_60905841e9eb00ec2026-06-12 · +86dVerified by operator
Texas State AGbd_bb1cc89a278c171c2026-06-18 · +92dVerified by operator

Showing first 10 of 15 linked disclosures.

Name: HUMANA INC.
norm: humana
Domain: humana.com

Name: HUMANA INC.
norm: humana
Domain: humana.com
Industry: HealthcarellmFinancial Servicesllm

Discovered: Sep 29, 2025
Breach occurred: Aug 1, 2025 – Aug 31, 2025
Undetected for: 59 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)Government IDHealth (basic)
Data elements: Social Security number
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1195 Supply Chain Compromise
Threat actor: External
Initial access: supply_chain

During the incident: Worked with Oracle to address the vulnerability
Notified law enforcement
Providing 24 months of credit monitoring and identity restoration services through Equifax
Changes made: Enhanced security safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(170 days from discovery to filing)
Compliance flags: MA AG >90dLeak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 7 states

View merged incident ↗

Massachusetts State AGMar 18 · first · this page

Idaho State AG+9d

Texas State AG+37d

Idaho State AG+43d

Illinois State AG+44d

HHS OCR+58d

Nebraska State AG+75d

New Hampshire State AG+86d

Massachusetts State AG+86d

Texas State AG+92d

Pattern: first filing Mar 18 (MA), last Jun 18 (TX) — a 92-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 15 — the full spread may be wider.

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 filingThis record

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

SEC 8-K / victim statement

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

Source URL: https://www.mass.gov/doc/2026-418-humana-inc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 18, 2026
Raw hash: e44a1fb58f0f8e8b64333e244dfe7e37df42ecec519497a0115c854a2ad2558f

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityHUMANA INC.

Victim entityHUMANA INC.

Incidentdiscovered Sep 29, 2025

Stated responseWorked with Oracle to address the vulnerability

ComplianceMA AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov