If we asked you to guess which operating system had the most security vulnerabilities in 2015, your instinctive response would probably be Windows. After all, it's infamous for security issues and being a magnet for hackers' attention.
However, according to a site called CVE Details that tracks security problems on a vast range of software throughout the year, Windows wasn't the largest security threat of 2015. So, what took the top spot?
It turns out that Apple's OS X took the top (dis)honors with a whopping 384 vulnerabilities. Apple also took second spot with iOS and its 375 vulnerabilities. Both of those numbers are nearly triple Apple's performance in 2014. This is due to both increasing popularity (Mac) and shift in hacker focus from desktop to mobile (iOS).
So, what about the rest of the list? If you've been following security news this year, you won't be surprised to learn that Adobe grabbed the next four spots with its Flash browser plug-in and Air development kits.