The hackers appear to be loosely affiliated with the group of alleged teen hackers, known as "Crackas With Attitude" or CWA, who broke into the AOL email account of CIA Director John Brennan last year, and targeted other high-profile US government officials in recent weeks.

The list of names appears to be legitimate, and includes full names, work phone numbers, emails, and titles, but no home addresses or Social Security numbers. The agents in the list belong to several departments, including the Miami Police Department, the Miami-Dade Police Department, and the Miami Beach Police Department.

It's unclear where the hackers got the data, but it likely comes from a US government database of law enforcement officials that was reportedly breached last year. In early November, the CWA hackers claimed to have gotten into a series of government portals where they got a database of law enforcement agents.

The hacker who published the data and tweeted it out said they got it "directly off of the feds servers."