Robert S. Mueller III, Director of the Federal Bureau of Investigation (FBI), has warned Congress of terrorist hacking in the “FBI Budget Request for Fiscal Year 2013,” according to the Zero Day ZDNET blog.

He believes that while terrorists haven’t hacked their way into the U.S. government yet, it’s only a matter of time.

On February 28, 2012, the hacktivist group Anonymous hacked into a telephone conversation taking place between FBI authorities in New York and law enforcement in London. They then posted the 16-minute recording of the conference online to embarrass authorities.