Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsTargetedPIIIdentity (basic)LowContained

Mabrey Bank

bd_77e40dfec5ae2216 · schema v1 · pii pii-v1

Severity

Low

Discovered

Feb 11, 2020

Filed

May 27, 2020

To disclose

15 weeks

Affected

8state residents only

Linked

4 filings

Confidence

66%

Full breach record for Mabrey Bank →

Mabrey Bank notified Montana residents of a data security incident involving unauthorized access to two employee email accounts. The unauthorized access occurred between January 30 and February 10, 2020. The bank secured accounts, engaged forensic counsel, and implemented additional security measures including MFA and training.

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Incident timeline

undetected · 12 days

discovery → filing · 15 weeks / 106 days

Jan 30, 2020

Begins

Feb 11, 2020

Discovered

May 27, 2020

Filed

vs. sector median

+7 wks slower

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Massachusetts State AGbd_2b328280d8c5e4762020-05-27Verified
Indiana State AGbd_c3fce94bf9b338972020-05-27Verified
New Hampshire State AGbd_e2f9553f72a9f3fb2020-05-28 · +1dVerified

Name: Mabrey Bank
norm: mabrey bank

Name: Mabrey Bank
norm: mabrey bank
Industry: Financial Servicesllm

Discovered: Feb 11, 2020
Breach occurred: Jan 30, 2020 – Feb 10, 2020
Undetected for: 12 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 8state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: External
Initial access: phishing_link

During the incident: Secured the employees’ email accounts
Engaged a leading cybersecurity firm to assist with the investigation
Conducted a comprehensive review of the emails and attachments
Changes made: Reset the passwords to the employees’ accounts
Increased monitoring of network activity
Added additional email authentication measures
Providing additional cybersecurity training to employees
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(106 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Massachusetts State AGMay 27 · first

Indiana State AGMay 27 · first

Montana State AGMay 27 · first · this page

New Hampshire State AG+1d

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/Breach-NotificationDetails-176.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 27, 2020
Raw hash: 8e87e7c7fe043e5b7213e3d9d5d21cfc1171091f081dbf2eea252fa3d3fe320b

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMabrey Bank

Victim entityMabrey Bank

Incidentdiscovered Feb 11, 2020

Stated responseSecured the employees’ email accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov