The City of Pittsburg, California discovered a security incident affecting part of its computer environment on August 18, 2024. After detecting the issue, the City brought in third-party cybersecurity specialists to investigate, and it also alerted federal law enforcement. The City has not described the incident as ransomware or a specific hacking technique in the notification text provided, but the language used — a ‘security incident affecting a portion of its environment’ investigated by outside cybersecurity experts — points to some form of unauthorized system access rather than a simple mistake or lost device. The City first told the Pittsburg community about the incident in August 2024, then issued a more detailed update in May 2025 once its investigation into what data was involved had progressed further.
