HackingFinancial ServicesFinanceVulnerability ExploitData ExfiltratedTargetedIdentity (basic)Government IDPIIMediumContained

1st Source Bank

bd_644846888cf47c7f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 1, 2023

Filed

Jul 19, 2023

To disclose

7 weeks

Affected

187state residents only

Linked

10 filings

Confidence

66%

Full breach record for 1st Source Bank →6 incidents on file

1st Source Bank notified Montana residents of a data breach involving the MOVEit file transfer vulnerability. The bank discovered the vulnerability on June 1, 2023, and patched the system. Affected data included names, SSNs, driver's license numbers, and dates of birth. The bank engaged forensic experts and offered 12 months of credit monitoring via Kroll.

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Incident timeline

discovery → filing · 7 weeks / 48 days

Jun 1, 2023

Discovered

Jul 19, 2023

Filed

vs. sector median

2 wks faster

This filing is one of 10 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 →

Linked disclosures

Why this link?

Regulatory filings (9) · sorted by filing gap

California State AGbd_504a71c703e7184f2023-07-19Verified
Maine State AGbd_ee5f8afdf477969e2023-07-19Verified
Washington State AGbd_d0cebba25691bccf2023-07-20 · +1dVerified
Oregon State AGbd_db8e5883d0d70d122023-07-20 · +1dVerified

Show 5 more filings ↓up to 9d gap

Vermont State AGbd_a872f10fb82b1c592023-07-14 · +5dCandidate
California State AGbd_4a59c8811709f62b2023-07-26 · +7dVerified
New Hampshire State AGbd_fda2be588d0437762023-07-26 · +7dVerified
Oregon State AGbd_08c27ccfede4e9ef2023-07-27 · +8dVerified
SEC 8-Kbd_66ec9f2d6644e6032023-07-10 · +9dVerified

Name: 1st Source Bank
norm: 1st source bank

Name: 1st Source Bank
norm: 1st source bank
Industry: Financial Servicesllm

Discovered: Jun 1, 2023
Materiality determined: —
Notification sent: Jun 24, 2023
Affected individuals: 187state-resident count only
Data types: Identity (basic)Government IDPII
Data elements: Social Security numberDate of birth
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Took immediate steps to patch our MOVEit system
Conducted an internal assessment
Engaged leading, independent cybersecurity experts to conduct a comprehensive investigation
Secured the services of Kroll to provide complimentary Identity Monitoring services for 12 months
Changes made: Patched our MOVEit system in accordance with Progress Software’s instructions
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(48 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 7 states

View merged incident ↗

SEC 8-KJul 10 · first

Vermont State AG+4d

California State AG+9d

Maine State AG+9d

Montana State AG+9d · this page

Washington State AG+10d

Oregon State AG+10d

California State AG+16d

New Hampshire State AG+16d

Oregon State AG+17d

Pattern: first filing Jul 10, last Jul 27 (OR) — a 17-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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-445.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 19, 2023
Raw hash: 62eb47e97fb6701761b861f4046c7c86b884812e03653cc5373501c1db4419c8

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entity1st Source Bank

Victim entity1st Source Bank

Incidentdiscovered Jun 1, 2023

Stated responseTook immediate steps to patch our MOVEit system

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov