Hackers demonstrated 21 new vulnerabilities in attacks against browsers and operating systems during this year’s Pwn2Own hacking contest. The complexity of the exploits, though, shows that hackers have to jump through many hoops to gain full system control. Five contestants demonstrated three successful remote code execution attacks against Safari on OS X, two against Microsoft Edge on Windows, four against Adobe Flash on Windows and one partially successful attack against Google Chrome on Windows. The contest takes place every year during the CanSecWest security conference in Vancouver, Canada.”]