FireEye breach explained: How worried should businesses be? The theft of red team tools, allegedly by Russia's Cozy Bear group, poses only a small threat to other organisations. The real lesson: Anyone can be hacked Credit: FireEye Cyber security firm FireEye announced on Tuesday that a sophisticated group of hackers, likely state-sponsored, broke into its network and stole tools the company's experts developed to simulate real attackers and test the security of its customers. While this is a worrying development, it's unlikely that this will result in a significant risk increase to organisations, as some offensive tool leaks did in the past.