https://www.theguardian.com/technology/2020/dec/08/fireeye-hack-cybersecurity-theft

One of country’s largest cybersecurity companies says sophisticated operation stole tools it uses to test government clients’ defenses

FireEye, one of the largest cybersecurity companies in the US, said on Tuesday that foreign government hackers with “world-class capabilities” broke into its network and stole tools it uses to test the defenses of its thousands of customers, who include federal, state and local governments and major global corporations.