Check out the top operating systems by vulnerabilities reported in 2014. Apple's operating systems saw an increase in security vulnerabilities in 2014 and because of their severity, caused OS X and iOS to top the charts for 2014.

Over the years, Windows has consistently come under fire from security researchers for not being secure enough and having unpatched vulnerabilities.

However, for the past few years, Microsoft has been taking security of its OS seriously and has released timely patches to protect users from threats; effectively dropping out of the top 3 vulnerable OSes list. On the contrary, Apple's desktop and mobile operating systems have seen a rise in security vulnerabilities and the latest GFI report has revealed that majority of those are of high and medium severity. The Linux kernel has closely followed Apple in the top 3 as well, which can be attributed to some of the high profile security flaws such as the Heartbleed bug in OpenSSL and Shellshock, which affected Bash.

2014 Top Security Vulnerability list for OSes