HackingHealthcareTechnologyHealthcareStolen CredentialsCapture Stored DataData ExfiltratedCustomer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDHealth (basic)PHIMediumContained

Cerner Corporation

bd_d595530ba42639ae · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 7, 2025

Filed

Jul 25, 2025

To disclose

20 weeks

Affected

802state residents only

Linked

8 filings

Confidence

69%

Full breach record for Cerner Corporation →4 incidents on file

Cerner Corporation, an EHR vendor, experienced unauthorized access to legacy systems starting Jan 22, 2025. The reporting entity, Anytown Health System, learned of the breach on March 7, 2025. Federal law enforcement requested a delay in notification. Data exposed included names, SSNs, and PHI. 802 Washington residents affected. Notification sent July 25, 2025.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d20 weeks discovery → filing

Incident timeline

undetected · 44 days

discovery → filing · 20 weeks / 140 days

Jan 22, 2025

Begins

Mar 7, 2025

Discovered

Jul 25, 2025

Filed

vs. sector median

+7 wks slower

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

California State AGbd_28ee1e6c3dffc4902025-07-25Candidate
Nebraska State AGbd_3a23d77e3f28adfc2025-07-25Verified
Oregon State AGbd_84ee1229a46c91d32025-07-25Verified
Massachusetts State AGbd_9d89cbf05f39075c2025-07-25Verified

Show 3 more filings ↓up to 7d gap

South Carolina State AGbd_eb522228bcaccfaa2025-07-25Verified
Texas State AGbd_80ec506162e7d5792025-07-28 · +3dVerified
Illinois State AGbd_f238b85559dc3dac2025-08-01 · +7dVerified

Name: Anytown Health System
norm: anytown health system
Domain: cerner.com

Name: Cerner Corporation
norm: cerner
Domain: cerner.com
Industry: HealthcarellmTechnologyllm

Discovered: Mar 7, 2025
Breach occurred: Jan 22, 2025 – Apr 1, 2025
Undetected for: 44 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 25, 2025
Affected individuals: 802state-resident count only
Data types: Identity (basic)Government IDHealth (basic)PHI
Data elements: NameSocial Security numberMedical informationDate of birth
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoing
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: External
Regulator citations: federal law enforcement asked to delay patient notification
Initial access: valid_credentials

During the incident: Began investigating the incident as soon as we learned of it
Vendor initiated its critical incident response process
Took steps to secure the impacted systems
Began an investigation
Worked with external cybersecurity specialists and federal law enforcement
Changes made: Offering complimentary access to Experian IdentityWorks Credit Plus 3B for 24 months
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(140 days from discovery to filing)
Compliance flags: WA AG >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 · 8 filings · 8 states

View merged incident ↗

California State AGJul 25 · first

Nebraska State AGJul 25 · first

Oregon State AGJul 25 · first

Massachusetts State AGJul 25 · first

South Carolina State AGJul 25 · first

Washington State AGJul 25 · first · this page

Texas State AG+3d

Illinois State AG+7d

Pattern: first filing Jul 25 (CA), last Aug 1 (IL) — a 7-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA34127.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 25, 2025
Raw hash: dcc7f4f092be79ad5bba2448d8ea582576332ebc6f50955d7abd0734e1cb325a

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityAnytown Health System

Victim entityCerner Corporation

Incidentdiscovered Mar 7, 2025

Stated responseBegan investigating the incident as soon as we learned of it

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com