Premiere security firm FireEye says it was breached by nation-state hackers

FireEye, a $3.5 billion company that helps customers respond to some of the world’s most sophisticated cyberattacks, has itself been hacked, most likely by a well-endowed nation-state that made off with “red-team” attack tools used to pierce network defenses.

The hack also raises the specter that a group that was already capable of penetrating a company with FireEye’s security prowess and resources is now in possession of proprietary attack tools, a theft that could make the hackers an even greater threat to organizations all over the world.