HackingFinancial ServicesTechnologyFinanceVulnerability ExploitCapture Stored DataZero-DayData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Financial Institution Service Corporation

bd_f0522e8399768dcd · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 31, 2023

Filed

Sep 22, 2023

To disclose

16 weeks

Affected

272state residents only

Linked

12 records

Confidence

65%

Full breach record for Financial Institution Service Corporation →4 incidents on file

Financial Institution Service Corporation (FISC) notified Montana residents of a data breach involving the MOVEit Transfer tool. An unknown actor exploited zero-day vulnerabilities to access the server between May 30-31, 2023, exfiltrating names, SSNs, driver's licenses, and financial account data. FISC engaged forensic specialists, reported to law enforcement, and provided 12 months of Kroll identity monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >30d16 weeks discovery → filing

Incident timeline

undetected · 1 days

discovery → filing · 16 weeks / 114 days

May 30, 2023

Begins

May 31, 2023

Discovered

Sep 22, 2023

Filed

vs. sector median

+8 wks slower

This filing is one of 12 records about the same incident.View merged incident

Part of Progress Software Corporation supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

A leak claim by cl0p about this victim was first seen 77 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitecl0pbd_868874c89834e55b2023-07-07 · +77dVerified by operator

Regulatory filings (9) · sorted by filing gap

Indiana State AGbd_267310e2d32558712023-09-22Verified
Maine State AGbd_3c34af888523115e2023-09-22Verified by operator
Washington State AGbd_464efdbae9f239d32023-09-22Verified by operator
California State AGbd_4a83bdbad5aeec582023-09-22Verified by operator

Show 5 more filings ↓up to 264d gap

Oregon State AGbd_e8d9465614e4a1272023-09-22Verified by operator
Massachusetts State AGbd_ee6604ed129e9a642023-09-22Verified by operator
Maine State AGbd_04c337c25e3d94e62023-09-28 · +6dVerified by operator
South Carolina State AGbd_6c9e179c96a550ba2023-09-29 · +7dVerified by operator
Illinois State AGbd_74fa8344bc4f530d2023-01-01 · +264dVerified by operator

Showing first 10 of 11 linked disclosures.

Name: Financial Institution Service Corporation
norm: financial institution service
Domain: fiscdp.com

Name: Financial Institution Service Corporation
norm: financial institution service
Domain: fiscdp.com
Industry: Financial ServicesllmTechnologyllm

Discovered: May 31, 2023
Breach occurred: May 30, 2023 – May 31, 2023
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 272state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 ChannelT1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: promptly reported the event to federal law enforcement
Initial access: exploit_public_facing

During the incident: Moved quickly to apply available patching and undertook recommended mitigation steps
Launched an investigation, with the assistance of third-party cybersecurity specialists
Promptly reported the event to federal law enforcement
Providing you with access to twelve (12) months of identity monitoring services provided by Kroll
Changes made: Reviewing and enhancing our existing policies and procedures related to data privacy
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(114 days from discovery to filing)
Compliance flags: Leak >30d
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 · 10 filings · 9 states

View merged incident ↗

Illinois State AGJan 1 · first

Indiana State AG+264d

Maine State AG+264d

Washington State AG+264d

California State AG+264d

Oregon State AG+264d

Massachusetts State AG+264d

Montana State AG+264d · this page

Maine State AG+270d

South Carolina State AG+271d

Pattern: first filing Jan 1 (IL), last Sep 29 (SC) — a 271-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 11 — 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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-710.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 22, 2023
Raw hash: b2cd2a6b54a6fc4f69e9dff09d1406f1bb297e1951eefa8bf91eb150da2acfb6

Linked disclosures

Ransomware claims (1)

Regulatory filings (9) · sorted by filing gap

Reporting entityFinancial Institution Service Corporation

Victim entityFinancial Institution Service Corporation

Incidentdiscovered May 31, 2023

Stated responseMoved quickly to apply available patching and undertook recommended mitigation steps

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancedojmt.gov