HackingFinancial ServicesFinanceCustomer Data InvolvedIdentity (basic)Financial accountMediumContained

Limestone Bank, Inc.

bd_5d3b964d889a8c14 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 16, 2023

Filed

Sep 15, 2023

To disclose

4 weeks

Affected · nationwide

47,59026 in this filing

Linked

6 filings

Confidence

66%

Full breach record for Limestone Bank, Inc. →

Limestone Bank reported an external system breach (hacking) occurring between November 21, 2022, and March 23, 2023, discovered on August 16, 2023. The incident affected 47,590 individuals, including 26 Maine residents. Acquired data included names and financial account or credit/debit card numbers (with security codes/PINs). The bank provided written notification and offered one year of credit monitoring and identity theft protection services through Equifax.

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Maine clockDiscovered Aug 16, 2023 → Filed with AG Sep 15, 202330d ✓ ME AG ≤30d4 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 · 268 days

discovery → filing · 4 weeks / 30 days

Nov 21, 2022

Begins

Aug 16, 2023

Discovered

Sep 15, 2023

Filed

vs. sector median

4 wks faster

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Montana State AGbd_205d103bb61afbcd2023-09-15Candidate
Indiana State AGbd_479cf63665e980622023-09-15Verified
Massachusetts State AGbd_67b3b5c396b298342023-09-15Verified
New Hampshire State AGbd_c83686cdeac36a3f2023-09-15Verified

Show 1 more filing ↓

Vermont State AGbd_e69f36a77ffb01dd2023-09-15Verified

Name: Limestone Bank, Inc.
norm: limestone bank
Industry: Financial Services

Name: Limestone Bank, Inc.
norm: limestone bank
Industry: Financial Services
Industry: Financial Servicesllm

Discovered: Aug 16, 2023
Breach occurred: Nov 21, 2022 – Mar 23, 2023
Undetected for: 268 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 15, 2023
Affected individuals: 47,590state + nationwide
Data types: Identity (basic)Financial account
Data elements: Financial account number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Filed data breach notice with Maine Attorney General's Office
Initial access: exploit_public_facing

During the incident: Sent written notification to affected consumers
Offered one year of credit monitoring and identity theft protection services through Equifax
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 days from discovery to filing)
Compliance flags: ME AG ≤30d · 30d
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.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Aug 16, 2023
→ Filed with AG: Sep 15, 2023
30d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Aug 16, 2023 → Filed with AG: Sep 15, 2023	30d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Montana State AGSep 15 · first

Indiana State AGSep 15 · first

Massachusetts State AGSep 15 · first

New Hampshire State AGSep 15 · first

Vermont State AGSep 15 · first

Maine State AGSep 15 · first · this page

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-a1252b4f8318/20d1549b-03d7-405a-a295-ff305ba9a6b9.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 15, 2023
Raw hash: 1046cc9205fd04ca30bb9c6522b9f515d0e6dd0e73ccc509cab24ce6be5ba012

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityLimestone Bank, Inc.

Victim entityLimestone Bank, Inc.

Incidentdiscovered Aug 16, 2023

Stated responseSent written notification to affected consumers

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov