I’ve written about this before—if you still have a computer with Windows XP or Vista, you really need to upgrade. Microsoft no longer supports XP, they will end support for Vista and other software makers are ending their support. Google will also be ending support for Chrome on XP and Vista. But it’s not only Windows users that need to be concerned. Google is also ending support for OS X 10.8 and older. The risk of not upgrading to a supported OS is that security flaws will be discovered and not fixed leaving your computer and you vulnerable to hacking. Feel free to contact me if you have questions about upgrading.
To see what version of OS X you are running do this: click on the Apple on the top left of your screen, select About this Mac. The OS version will be displayed.