MalwareHealthcareHealthcareRansomwareData ExfiltratedData EncryptedDelayed DiscoveryAuthenticationCredentialsFinancial accountHealth (basic)Identity (basic)Government IDPHIHighContained

AKUMIN OPERATING CORP.

bd_e16c383f2f31d772 · schema v1 · pii pii-v1

Severity

High

Discovered

Oct 11, 2023

Filed

Dec 23, 2024

To disclose

15 months

Affected

5,063state residents only

Linked

7 filings

Confidence

70%

Full breach record for AKUMIN OPERATING CORP. →5 incidents on file

Akumin, Inc., a healthcare imaging provider, disclosed a ransomware incident on October 11, 2023, affecting approximately 5,063 Washington residents. Unstructured data containing PII, PHI, and financial info was copied. Akumin isolated systems, rebuilt networks, and notified law enforcement and regulators. Notices to residents began in December 2023 and continued through December 2024.

J jump to incidentP pin to compareR raw source

Washington clock✗ WA AG >90d15 months discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 15 months / 439 days

Oct 11, 2023

Begins

Oct 11, 2023

Discovered

Dec 23, 2024

Filed

vs. sector median

+52 wks slower

This filing is one of 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Montana State AGbd_31930fb683ccf8b82024-12-23Candidate
Indiana State AGbd_647223fbc4b0f6c62024-12-23Verified
California State AGbd_db7efd6c0c4d9e1a2024-12-23Verified
Vermont State AGbd_eb1cfb9c9e6261dc2024-12-23Verified

Show 2 more filings ↓up to 4d gap

New Hampshire State AGbd_ee2355bc545555b42024-12-23Verified
South Carolina State AGbd_9341eb013fc58c2e2024-12-27 · +4dVerified

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: AKUMIN OPERATING CORP.
norm: akumin operating
Industry: Healthcarellm

Discovered: Oct 11, 2023
Breach occurred: Oct 11, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 23, 2024
Affected individuals: 5,063state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)Credentials
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthHealth insurance IDMedical informationUsername + password
WA-stated cause: Cyberattack
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified the Securities Exchange CommissionNotified the U.S. Department of Health and Human ServicesIssued supplemental notification to HHSNotified the Office of the Attorney General in Connecticut, Illinois, Massachusetts, Montana, Nebraska, and New YorkNotification was provided to the Consumer Reporting Agencies

During the incident: Proactively isolated and quarantined its computer network from the internet
Took steps to confirm the security of its network
Securely rebuilt its systems
Undertook additional steps to further enhance the security of its systems
Notified federal law enforcement
Changes made: Implemented additional technical measures and processes to further enhance the company’s security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 months(439 days from discovery to filing)
Compliance flags: WA AG >90d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 7 states

View merged incident ↗

Montana State AGDec 23 · first

Indiana State AGDec 23 · first

California State AGDec 23 · first

Vermont State AGDec 23 · first

New Hampshire State AGDec 23 · first

Washington State AGDec 23 · first · this page

South Carolina State AG+4d

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/BreachM18180.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 23, 2024
Raw hash: 0035630e3e54257ddceb66c72017b594d30d9dc3993a7f7a3204162c5fefe23b

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityAKUMIN OPERATING CORP.

Incidentdiscovered Oct 11, 2023

Stated responseProactively isolated and quarantined its computer network from the internet

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com