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

BankGloucester

bd_b7b3242cbacb7368 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 12, 2023

Filed

Aug 22, 2023

To disclose

6 weeks

Affected

327state residents only

Linked

5 filings

Confidence

65%

Full breach record for BankGloucester →2 incidents on file

BankGloucester notified the NH Attorney General of a security incident affecting 327 NH residents. The breach originated from a third-party vendor, Darling Consulting Group (DCG), which was compromised via the MOVEit Transfer software vulnerability (exploit_vuln) around May 30-31, 2023. BankGloucester detected the incident on July 12, 2023, upon notification from DCG. The investigation concluded on August 16, 2023, confirming the exposure of personal information. Notifications were mailed on August 22, 2023, offering 2 years of Equifax credit monitoring.

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Incident timeline

undetected · 43 days

discovery → filing · 6 weeks / 41 days

May 30, 2023

Begins

Jul 12, 2023

Discovered

Aug 16, 2023

Scope determined

Aug 22, 2023

Filed

vs. sector median

3 wks faster

This filing is one of 5 about the same incident.View merged incident

Part of Darling Consulting Group supply-chain incident (2023) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

Massachusetts State AGbd_29b3b4e1a9e0fff92023-08-22Verified
Maine State AGbd_405d1174d081800b2023-08-22Candidate
Montana State AGbd_8e3590d7e88b579f2023-08-22Verified
Vermont State AGbd_bbcc8d64e8e7f5a42023-08-22Verified

Name: BankGloucester
norm: bankgloucester

Name: BankGloucester
norm: bankgloucester
Industry: Financial Servicesllm

Discovered: Jul 12, 2023
Breach occurred: May 30, 2023 – May 31, 2023
Undetected for: 43 daysoccurrence → discovery
Materiality determined: Aug 16, 2023
Notification sent: Aug 22, 2023
Affected individuals: 327state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain CompromiseT1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: Notified Attorney General John Formella
Third party: via Darling Consulting Group
Initial access: supply_chain

During the incident: Launched an investigation to determine what information, if any, of its customers were potentially impacted
Mailed notification letters to the New Hampshire residents
Offering the New Hampshire residents a complimentary, membership to credit monitoring and identity theft protection services through Equifax
Established a dedicated call center
Implemented additional security measures to protect customers’ accounts
Changes made: Use the findings from the investigation to look for additional opportunities to further strengthen its cybersecurity
Implement additional safeguards and security measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 6 weeks(41 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 5 states

View merged incident ↗

Massachusetts State AGAug 22 · first

Maine State AGAug 22 · first

Montana State AGAug 22 · first

Vermont State AGAug 22 · first

New Hampshire State AGAug 22 · 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://mm.nh.gov/files/uploads/doj/remote-docs/bankgloucester-20230822.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 22, 2023
Raw hash: b687491f6e5b5fda902f6da1d5d41c24ae91ebb03017d801f9ff6031b1c1c74b

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityBankGloucester

Victim entityBankGloucester

Incidentdiscovered Jul 12, 2023

Stated responseLaunched an investigation to determine what information, if any, of its customers were potentially impacted

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov