Multiple criminals, including at least potentially one nation-state group, broke into a US federal government agency's Microsoft Internet Information Services web server by exploiting a critical three-year-old Telerik bug to achieve remote code execution. In 2020 made the list of the top 25 computer security vulnerabilities Chinese government hackers are using to break into networks and steal data. And it's clear someone in the federal government didn't get the memo about applying security fixes in a timely manner