Where does the MutualOne Bank - August case file come from?

Every entry is taken from the breach report MutualOne Bank - August lodged with the Massachusetts Attorney General. Nothing here is estimated.

Why do the incident date and the report date differ?

Companies usually investigate before they report. The gap between the two dates shows how long that took.

What does the records-affected figure count?

It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.

Does this case file change over time?

Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Case file

Case File: MutualOne Bank - August Data Breach

This file collects the dated facts on record for the MutualOne Bank - August incident. The state report is dated August 31, 2025.

Timeline

August 31, 2025Report filed in MassachusettsDate the notice was lodged with the Massachusetts Attorney General.

Case facts

Filing state: Massachusetts
Date reported: August 31, 2025
Receiving office: Massachusetts Attorney General

Case notes

MutualOne Bank filed a report with Massachusetts regulators on August 31, 2025, concerning a data security incident. This filing indicates that certain personal information entrusted to the bank may have been compromised through an unspecified breach.

While the exact nature of the breach and the specific types of information involved remain under investigation, such incidents typically present a risk of unauthorized access to sensitive customer data. Affected individuals are advised to remain vigilant regarding their personal accounts.

To help protect against potential misuse of the exposed information, it is generally recommended to carefully review financial account statements and explanations of benefits for any unauthorized activity. Consider placing a fraud alert on your credit file with the three major credit bureaus, and regularly monitor your credit reports for suspicious inquiries or new accounts opened in your name.

Additionally, be cautious of unsolicited communications, especially those requesting personal or financial details. The bank has indicated that an investigation into the scope and impact of this incident is ongoing, as noted in public regulatory filings.

Questions about this case file

Where does the MutualOne Bank - August case file come from?: Every entry is taken from the breach report MutualOne Bank - August lodged with the Massachusetts Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?: Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?: It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?: Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

Massachusetts data breaches

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Timeline

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Case notes

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