MalwareFinancial ServicesFinanceRansomwareCustomer Data InvolvedData EncryptedRansom DemandedPIIIdentity (basic)Government IDCritical

1st Source Bank

bd_ee5f8afdf477969e · schema v1 · pii pii-v1

Severity

Critical

Discovered

Jun 1, 2023

Filed

Jul 19, 2023

To disclose

7 weeks

Affected · nationwide

450,00090 in this filing

Linked

10 filings

Confidence

65%

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

1st Source Bank reported a ransomware incident that was discovered on June 1, 2023. The breach impacted approximately 450,000 individuals, compromising their names and Social Security numbers. The bank began notifying affected parties on July 14, 2023, and offered 12 months of identity monitoring services through Kroll.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jun 1, 2023 → Filed with AG Jul 19, 202348d ⏱ ME AG >30d7 weeks 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 · 7 weeks / 48 days

Jun 1, 2023

Begins

Jun 1, 2023

Discovered

Jul 19, 2023

Filed

vs. sector median

3 wks faster

This filing is one of 10 filings 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
Montana State AGbd_644846888cf47c7f2023-07-19Verified
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
Breach occurred: Jun 1, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 14, 2023
Affected individuals: 450,000state + nationwide
Data types: PIIIdentity (basic)Government ID
Data elements: Social Security number
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Notified consumer reporting agencies

Changes made: Offered 12 months of identity monitoring services from Kroll
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(48 days from discovery to filing)
Compliance flags: ME AG >30d · 48d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jun 1, 2023
→ Filed with AG: Jul 19, 2023
48d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jun 1, 2023 → Filed with AG: Jul 19, 2023	48d	30 days (soft)	ME AG >30d

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

Montana State AG+9d

Maine 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/ecd3f2c2-8cdf-48cc-84f5-f3321ae41cd7.shtml
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: 6eabde2fd6522ac03d0f62ce09820313900ab3519fb6a1cc5e6f4d4d6c517514

Linked disclosures

Regulatory filings (9) · sorted by filing gap

Reporting entity1st Source Bank

Victim entity1st Source Bank

Incidentdiscovered Jun 1, 2023

Stated responseOffered 12 months of identity monitoring services from Kroll

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov