Patelco Credit Union has disclosed a ransomware attack that led to the proactive shutdown of several customer-facing banking systems to mitigate the incident's impact. The American credit union, with assets exceeding $9 billion, serves over 400,000 members across 37 branches in California. The attack, which occurred on June 29, 2024, resulted in the unavailability of online banking, mobile app services, call centers, and electronic transactions such as transfers, direct deposits, and payments. However, debit and credit card transactions remain operational in a limited capacity, and cash withdrawals from ATMs are still available. Patelco has engaged third-party cybersecurity experts to investigate the incident and expedite recovery, though no timeline for a return to normal operations has been provided. The credit union has warned of potential delays in customer service and has requested patience from its members as efforts continue around the clock to restore services. Despite the extensive impact, no ransomware groups have claimed responsibility for the attack, and it remains unclear whether any sensitive personal or financial data has been compromised. Given the potential risk of data theft, Patelco urges its clients to be vigilant against unsolicited communications requesting personal information and to monitor account activity closely. The credit union has yet to comment on the possibility of customer data exposure, as the investigation is still in its early stages. Members are advised to stay cautious and report any suspicious activities immediately.
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