No details have been released by
Anonymous about this attack, but their normal method is distributed denial of service (DDoS) attacks.
"CIA TANGO DOWN:
https://www.cia.gov/ #Anonymous," was tweeted by the @YourAnonNews feed at around 3:30pm EST.
During January, in revenge for the take down of the Megaupload website by the
FBI, Anonymous took down the websites of the FBI, the Copyright Office and also the Department of Justice.
Last week, Anonymous also leaked a
conference call between Scotland Yard and the FBI, where agents were discussing ongoing hacker cases. Apparently they were able to access the call because a foreign police official had forwarded the conference call invite to a personal account, where the call was intercepted.