Patelco Credit Union security incident history
Hacking, data breaches and other security incidents involving Patelco Credit Union, with related coverage.
Patelco Credit Union ransomware attack compromises member data
Impact: Compromise of member personal information and losses of millions of dollars
Patelco Credit Union was hit by a ransomware attack that led to unauthorised access to members' personal information. In June 2025, the chief executive said the cyber-attack had caused losses of millions of dollars.
Related reports: 2 · last report →Patelco Credit Union ransomware attack exposes data of over 1 million
1mImpact: Personal data of more than 1 million people, including customers and staff
A ransomware attack on Patelco Credit Union in California in June 2024 exposed the personal data of customers and staff. The attackers put the stolen data up for auction, and the number of people affected grew from an initial estimate of around 726,000 to more than 1 million. A $7.25 million settlement was subsequently reached in a data breach class action.
Related reports: 13 · last report →Ransomware disrupts financial services at Patelco Credit Union
500kImpact: Disruption of financial services for about 500,000 members and an investigation into a related data breach
US-based Patelco Credit Union was hit by a ransomware attack on 29 June 2024 and shut down some of its banking systems. Online and mobile banking services and some transactions were disrupted, and an investigation was also launched into a data breach affecting about 500,000 members. On 8 July, the credit union said its network had been stabilised.
Related reports: 12 · last report →