Europe Takes Action Against Iran-Linked Cyber Spies

European authorities have taken action to take down a cyber espionage campaign believed to be linked to Iran's powerful Revolutionary Guard, the first operation of its kind since Tehran signed a nuclear treaty, according to security researchers. The hacker group -- dubbed "Rocket Kitten" by security experts who have been hunting the hacker group since early 2014 -- has mounted cyberattacks on high-profile political and military figures globally since that time, according to researchers from several cyber security firms who have monitored its activities.