I love it when one group of government spooks spies on another group of government spooks. It keeps them busy which means maybe they will have less time to spy on the citizens.
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The U.S government is caught up in another scandal in which federal agents have been accused of hacking into one another's computers.
When the CIA was established in 1947, Congress and President Harry Truman were concerned that it might not confine itself to spying. Its sole statutory purpose was to steal secrets from foreign governments so that the U.S. would know what they were planning and could prepare for any behavior adverse to American government interests. By its nature, it was operating in secret, and because it lacked transparency, it lacked accountability. One of the statutory mechanisms to achieve accountability was to require the CIA to report to two committees of Congress, but in secret.
Over the years, as sometimes happens between regulators (the congressional committees) and the entity to be regulated (the CIA), they developed a chummy relationship. In this case, the relationship has been so chummy that, at the behest of Presidents George Bush and Barack Obama, the CIA has gone to the Senate and House Intelligence committees, instead of going to the full Congress, for permission to torture prisoners, kill Americans with drones, and fight small-scale wars—all well beyond the statutory mission of stealing secrets.
A Rivalry of Government Hackers - Reason.com