Platinum Federal Credit Union (PFCU) suffered a data breach after detecting suspicious activity in an employee’s email account on March 27, 2025. An unauthorized actor accessed the account, compromising personal information. A forensic investigation confirmed on September 17, 2025, that the breach exposed sensitive data, including names, Social Security numbers, and financial account details of potentially thousands of account holders. PFCU notified affected individuals via mail (starting September 24, 2025) and reported the incident to the Massachusetts Attorney General’s office on September 30, 2025. The breach stemmed from a cyberattack targeting employee credentials, leading to the exfiltration of highly sensitive customer data. While the exact number of victims remains undisclosed, the exposed information poses significant risks of identity theft, financial fraud, and phishing attacks. In response, PFCU secured the compromised account, engaged third-party forensic experts, and offered free credit monitoring (Experian IdentityWorks) to affected individuals. The incident underscores vulnerabilities in email security and the potential for large-scale financial and reputational damage.