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Case File: Massachusetts Municipal Wholesale Electric Company Data Breach

This file collects the dated facts on record for the Massachusetts Municipal Wholesale Electric Company incident. The state report is dated July 21, 2025.

Timeline

  1. July 21, 2025Report filed in New HampshireDate the notice was lodged with the New Hampshire Attorney General.

Case facts

Filing state
New Hampshire
Date reported
July 21, 2025
Receiving office
New Hampshire Attorney General

Case notes

Massachusetts Municipal Wholesale Electric Company, often abbreviated as MMWEC, has publicly reported a data security incident. This disclosure was made through a filing with the New Hampshire Attorney General's office on July 21, 2025, as part of regulatory compliance for data breaches affecting state residents.

The exact nature of the breach type and the specific dates when the incident occurred have not been specified in the publicly available filing. The company is currently investigating the situation to determine the full scope and impact of the event.

While the filing does not detail the specific categories of information involved, it confirms that personal information was potentially exposed. The number of individuals affected by this incident has also not been disclosed in the public record.

If you receive a notification letter regarding this incident, it is crucial to read it thoroughly. This document will contain specific details relevant to your situation, including any information that may have been compromised and steps recommended by Massachusetts Municipal Wholesale Electric Company.

In the interim, consider general protective measures. Regularly monitor your accounts for any unusual activity and review statements from financial institutions for discrepancies. Be vigilant against unexpected emails or communications that request personal details, as these could be phishing attempts.

Questions about this case file

Where does the Massachusetts Municipal Wholesale Electric Company case file come from?
Every entry is taken from the breach report Massachusetts Municipal Wholesale Electric Company lodged with the New Hampshire 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.

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New Hampshire data breaches

Filing source: New Hampshire Attorney General