DERP is a hacker group that is known for its involvement in a number of high-profile cyber attacks and data breaches. The group has claimed responsibility for a number of hacks, including the hacking of the websites of the United States Department of Justice and the Federal Bureau of Investigation (FBI) in 2011.
Very little is known about the members of DERP or about the group's motivations and activities. It is not clear who is behind the group or where it is based.
DERP has faced legal action and controversy for its activities, and it is not clear how active the group is at present, or whether it is still in operation.