Co-op Credit Union Data Breach Affects 8 in MA

Co-op Credit Union experienced a data breach. The credit union discovered that an unauthorized actor gained access to an internal employee account between April 8, 2025 and April 18, 2025. An investigation determined that sensitive personal information may have been acquired during the cyberattack.

A review took place and on July 23, 2025, revealed that data breach compromised personal and financial data. Exposed information included names, Social Security numbers and credit and debit card numbers.

CCU disclosed the cybersecurity incident to the Massachusetts Attorney General on Oct. 21, 2025 and has begun notifying affected consumers by mail. The total number of impacted individuals has not been released, but is believed to include current and former credit union account holders.

Co-op Credit Union's response

Following the discovery of the breach, Co-op Credit Union secured the compromised email account and worked with external cybersecurity experts to investigate the incident. In addition to state and federal disclosures, the credit union is offering affected members a free two-year membership with Experian IdentityWorks Credit 3B. Services provided includes credit monitoring across all three major credit bureaus, identity restoration support, and up to $1 million in identity theft insurance.

If you receive a data breach notice from Co-op Credit Union, you may want to:

• Sign up for the free credit monitoring services, offered by the financial institution.
• Monitor your credit reports and financial accounts for any unusual activity.
• Be alert for phishing emails or phone calls that may use your exposed information.
• Consider placing a fraud alert or credit freeze with major credit bureaus.

The credit union also set up an assistance line for member questions at 855-291-2474, available Monday through Friday from 8 a.m. to 8 p.m. CST.

More information about the financial institution is available on the Co-op Credit Union website.