HackingTechnologyHealthcareInformationVulnerability ExploitSupply Chain (3P Vendor)Customer Data InvolvedDelayed DiscoveryIdentity (basic)Government IDPHIPIIHealth (basic)MediumContained

Cierant

bd_15d0ae25a9674afd · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 10, 2024

Filed

Jul 7, 2025

To disclose

30 weeks

Affected

987state residents only

Linked

9 filings

Confidence

69%

Full breach record for Cierant →

Cierant Corporation filed a supplemental notification with the Washington AG regarding a cyberattack involving the third-party tool Cleo VLTrader. The incident, discovered on Dec 10, 2024, involved unauthorized access exploiting a vulnerability, affecting personal information of Washington residents. Cierant engaged law enforcement, rotated credentials, and offered credit monitoring.

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Washington clock✗ WA AG >90d30 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 49 days

discovery → filing · 30 weeks / 209 days

Oct 22, 2024

Begins

Dec 10, 2024

Discovered

Jul 7, 2025

Filed

vs. sector median

+11 wks slower

This filing is one of 9 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecl0pbd_07daf6a1b38451a92025-02-01 · +155dVerified by operator

Regulatory filings (7) · sorted by filing gap

Montana State AGbd_154646e20b01c5db2025-07-07Verified
Washington State AGbd_3dde15084b7b9d422025-07-07Verified
Montana State AGbd_d4221b679ab06c8d2025-07-07Verified
California State AGbd_dc825fbbaeb958ce2025-07-07Verified

Show 3 more filings ↓up to 6d gap

Texas State AGbd_a2f1dac33b9456df2025-07-08 · +1dVerified
HHS OCRbd_af706982660950002025-07-03 · +4dVerified by operator
Illinois State AGbd_f1e6a8237f126a062025-07-01 · +6dCandidate

Name: Cierant
norm: cierant
Domain: cierant.com

Name: Cierant
norm: cierant
Domain: cierant.com
Industry: TechnologyllmHealthcarellm

Discovered: Dec 10, 2024
Breach occurred: Oct 22, 2024 – Dec 9, 2024
Undetected for: 49 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 3, 2025
Affected individuals: 987state-resident count only
Data types: PIIIdentity (basic)Government ID
Data elements: NameHealth insurance IDMedical informationSocial Security number
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found after the fact
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified Washington Office of the Attorney GeneralReported the event to federal law enforcement
Initial access: exploit_public_facing

During the incident: Ceased use of Cleo VLTrader
Rotated passwords
Enhanced existing network security controls
Reported the event to federal law enforcement
Notifying relevant regulators
Changes made: Offering 12 months of complimentary credit monitoring services through Epiq
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 30 weeks(209 days from discovery to filing)
Compliance flags: WA AG >90dLeak >90d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 6 states

View merged incident ↗

Illinois State AGJul 1 · first

HHS OCR+2d

Montana State AG+6d

Washington State AG+6d

Montana State AG+6d

California State AG+6d

Washington State AG+6d · this page

Texas State AG+7d

Pattern: first filing Jul 1 (IL), last Jul 8 (TX) — 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/BreachA33858.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 7, 2025
Raw hash: b44e3af7035590b138ac1bf13a6d33aa86920eb0f806e558ca8a2c1c5064561e

Linked disclosures

Ransomware claims (1)

Regulatory filings (7) · sorted by filing gap

Reporting entityCierant

Victim entityCierant

Incidentdiscovered Dec 10, 2024

Stated responseCeased use of Cleo VLTrader

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com