It has taken more than a year for current and former residents of the City of Long Beach in California to learn that some of their personally identifiable and protected health information was compromised in a cyberattack. Notifications have been sent to multiple U.S. states confirming that the information of 470,060 individuals was exposed and potentially stolen in the attack. That figure includes 258,191 individuals whose protected health information was compromised. No ransomware group is known to have claimed responsibility for the attack.
The cyberattack was detected on or around November 14, 2023, and the forensic investigation confirmed on March 18, 2024, that sensitive data had been accessed or acquired by the threat actor. It then took a further 13 months before notification letters were mailed to the affected individuals. City officials confirmed that notification letters started to be mailed on April 14, 2025.
City officials explained that most of the affected systems were restored and brought back online within a matter of weeks after the attack was detected, and while confirmation of unauthorized access to data was confirmed in March 2024, in an October 7, 2024, update, the city explained that third party cybersecurity professionals were still trying to determine the nature and scope of the data stolen in the attack. The city explained in the notice that complimentary credit monitoring and identity theft protection services would be offered to individuals whose Social Security numbers were involved. “This process of identifying specific individuals’ sensitive information is incredibly detailed, time-intensive, can be lengthy, and has been ongoing to date,” explained city officials in the October 2024 notice. “Progress is being made, and the process may be close to completion in the upcoming months.”
In the latest notification, city officials explained that between the attack and April 14, 2025, there have been no indications that any of the impacted information has been misused for the purpose of committing identity theft or fraud, and said the notification letters were being issued as required by law and out of an abundance of caution. Long Beach Mayor Rex Richardson said, “This has proven to be an unprecedented event for our organization, and we continue to take this investigation and its findings seriously.” The individual notifications confirm that credit monitoring and identity theft protection services are being provided for 12 months to individuals whose Social Security numbers were compromised.
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