Hackers access FBI email system, send spam to thousands

• The compromised system was a server used by FBI personnel to communicate unclassified information outside of the organization, according to the Post.
• The spam emails referenced an international hacker group called the Dark Overlord and did not contain malicious attachments.

What they're saying: "This is an ongoing situation, and we are not able to provide any additional information at this time," the FBI said in a statement.

• "The impacted hardware was taken offline quickly upon discovery of the issue."
• "We continue to encourage the public to be cautious of unknown senders and urge you to report suspicious activity to ic3.gov or cisa.gov," the statement continued.