HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedFinancial accountIdentity (basic)Government IDPCIMediumContained

MutualOne Bank

bd_bdd7a5dd02cffc82 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Aug 11, 2026

To disclose

—

Affected

Not disclosed

Confidence

68%

Full breach record for MutualOne Bank →69 incidents on file

MutualOne Bank issued a state-agency notification regarding fraudulent debit card transactions. The bank investigated the charges, credited the affected accounts, and issued replacement cards with new numbers. The notification advises customers to monitor statements, place fraud alerts or security freezes with credit bureaus, and contact the FTC if identity theft is suspected.

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Incident timeline — partial

? — ?

Breach window unknown

Aug 11, 2026

Filed

—

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed13 affectedView incident

Name: MutualOne Bank
norm: mutualone bank
Domain: mutualone.mymortgage-online.com

Name: MutualOne Bank
norm: mutualone bank
Domain: mutualone.mymortgage-online.com
Industry: Financial Servicesllm

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Financial accountIdentity (basic)Government IDPCI
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Investigated four transactions that were charged to your account via your debit card
Credited your account
Made a replacement debit card with a new card number for you at the branch at no cost
Changes made: Recommended that you review your account statements and notify us of any suspicious activity
Recommended that you contact the fraud departments of the three major credit reporting agencies
Recommended that you place a free 90-day fraud alert on your credit file
Recommended that you place a security freeze on your consumer credit report
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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.mass.gov/doc/2026-1338-mutual-one-bank-july-2026/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 11, 2026
Raw hash: af5462c6dbaf6693739a508609adee69720732125c980c85d3b16e4638443620

Reporting entityMutualOne Bank

Victim entityMutualOne Bank

IncidentUnauthorized Access

Stated responseInvestigated four transactions that were charged to your account via your debit card

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov