HackingFinancial ServicesFinanceVulnerability ExploitSupply Chain (3P Vendor)Customer Data InvolvedData ExfiltratedIdentity (basic)Government IDMediumContained

1st Source Bank

bd_d3b9e2557a659262 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 1, 2023

Filed

Nov 28, 2023

To disclose

26 weeks

Affected

Not disclosed

Linked

2 filings

Confidence

64%

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

1st Source Bank notified customers that their personal information, including names and Social Security numbers, may have been acquired without authorization due to a critical vulnerability in the MOVEit file transfer software provided by Progress Software. The bank became aware of the alert on June 1, 2023, and patched the system. The breach date listed by the CA AG is May 27, 2023. The bank engaged cybersecurity experts and is offering 12 months of identity monitoring via Kroll.

J jump to incidentP pin to compareR raw source

California clockDiscovered Jun 1, 2023 → Notified Oct 27, 2023148d ✗ CA 60-day late26 weeks discovery → filing

Incident timeline

undetected · 5 days

discovery → filing · 26 weeks / 180 days

May 27, 2023

Begins

Jun 1, 2023

Discovered

Nov 28, 2023

Filed

vs. sector median

+16 wks slower

This filing is one of 2 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 (1) · sorted by filing gap

HHS OCRbd_3d177f54ec92c9902023-11-20 · +8dCandidate

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: May 27, 2023
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 27, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Patched its MOVEit system in accordance with Progress Software’s instructions
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
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 26 weeks(180 days from discovery to filing)
Compliance flags: CA 60-day late · 148d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Jun 1, 2023
→ Notified: Oct 27, 2023
148d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Jun 1, 2023 → Notified: Oct 27, 2023	148d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

HHS OCRNov 20 · first

California State AG+8d · this page

Pattern: first filing Nov 20 (IN), last Nov 28 (CA) — a 8-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://oag.ca.gov/ecrime/databreach/reports/sb24-577160
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 28, 2023
Raw hash: 6494517b915dd4e635a5735ad2fddef1ca4917c45a4b1f5079703d02dc15ba2c

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entity1st Source Bank

Victim entity1st Source Bank

Incidentdiscovered Jun 1, 2023

Stated responsePatched its MOVEit system in accordance with Progress Software’s instructions

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov