A number of operating systems and products, from Windows 10 and iOS 15, to Apple Safari, and Google Chrome, to Microsoft Exchange Server, and Ubuntu 20, were successfully hacked into during China\'s Tianfu Cup 2021. What\'s even more interesting than the contest itself was the fact that the fourth edition of the international cybersecurity competition saw participants making use of completely original, and largely never-seen-before exploits to break into systems at Chengdu, China. Nearly All Targets Hacked Successfully Apart from Chrome, this year\'s targets included Apple Safari running on MacBook Pro, Windows 10 21H1, Adobe PDF Reader, Ubuntu 20/CentOS 8,