The FBI is investigating a cyber intrusion affecting the information technology and data systems of the federal government’s Office of Personnel Management, or OPM.

In a June 4 press release notifying federal employees of the incident, OPM said the agency has partnered with the Department of Homeland Security and the FBI to determine the intrusion’s full impact on federal personnel. OPM said it will send notifications to approximately four million individuals whose personal information may have been compromised.

OPM’s press release included guidance for affected individuals, as well as tips to avoid becoming a victim.

In a June 4 statement confirming its role in the investigation, the FBI said, “We take all potential threats to public and private sector systems seriously and will continue to investigate and hold accountable those who pose a threat in cyberspace.”

OPM press release | FBI statement

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