Connex Credit Union Data Breach Affects 172,000 Members

Connex Credit Union breach exposes data of 172000 members, legal probe launched, experts urge victims to monitor accounts for fraud and identity theft.

A significant data breach at Connex Credit Union has affected the personal information of 172,000 members. The credit union, one of Connecticut’s largest, discovered that an unauthorized party had accessed and downloaded sensitive files from its systems on June 2, 2025.

According to the breach notification filed with the Office of the Maine Attorney General, the breach was officially discovered on July 27, 2025, even though the credit union had found the initial access on June 3. The company then began notifying affected individuals on or around August 7, 2025.

“It does seem longish that the credit union waited over a month to notify impacted victims,” said Roger Grimes, Data-Driven Defense Evangelist at KnowBe4. “Maybe it took them two weeks to figure out who exactly ...