Quote from dcraig:
Whatever system you are running, you need to be aware of security issues.
Having said that, all operating systems are not equal.
Microsoft historically had a shockingly poor attitude to security. Something like executing email attachments has never been allowed on *nix systems for example. Microsoft never encouraged a "respect the root" mindset. How many Windows boxes are run permanently as "Administrator" ? How many unpatched pirated copies of Windows are running out there in the wild ? Microsoft does nothing about this, even though it potentially compromises the integrity of the internet. All of this stuff and more has fostered the growth of the criminal malware cottage industry.
Here's another factor to consider. On Linux machines, nearly all the software - applications and operating system - are installed and maintained from a single source. And that source is the repository of the Linux distribution. This means fixes, upgrades and security patches for just about every bit of software on the box can be applied in a timely fashion. It is extremely easy to make sure all security patches are up to date for everything with a few mouse clicks - and system reboot is hardly ever required. If you make things this easy, then users will do them. There is no equivalent for Windows.
A bit of hand waving about more Windows desktops is all too easy, but meaningless and has nothing to do with taking security seriously.
A question to the first poster and the link posted. Did you actually look at the contents of the page ? Many of the security notifications are for things like PHP, Apache, OpenSSL and such like ie software products that run on all of Apple, Linux, BSD, Solaris, Windows etc etc.