Anonymous, continuing an unusually active run of activity, took credit for bringing down the Central Intelligence Agency's website Friday afternoon. As of 3:50 p.m. ET, the site remains inaccessible.

"CIA TANGO DOWN: cia.gov," reads a tweet from an Anonymous-affiliated account.

The CIA takedown is only the latest digital assault in a recent wave of Anonymous activity.

Late last week, Anonymous went on an all-day hack-and-leakathon, targeting the FBI, Scotland Yard, the Boston Police Department, the Greek Ministry of Justice and the law firm that defended a U.S. Marine who was involved in a 2005 massacre of Iraqi civilians. The group released files from that law firm along with an audio recording of a conversation between the FBI and Scotland Yard about a joint cybercrime investigation.

Tuesday, Anonymous struck again, posting the sensitive data of city officials from Oakland, Calif., in response to the city's handling of Occupy Oakland protesters.

In January, Anonymous announced a major SOPA and PIPA-related boycott of music, films and other media throughout the month of March:

What Is Anonymous?

Images courtesy of Flickr, gaelx