I would spend the time going through all the junk and bloatware on the machine and eliminate all of it.
However, they had a problem a year or two ago where people running it had their computers bricked.
I would steer clear of TM. Lots of ways to meditate without paying the big bucks. There are traditions that go back thousands of years that don't come with the high price tag. Your local adult education program may have something.
In a nutshell the article says if you keep Adobe Flash, Adobe Acrobat/Reader , Java JRE, and Internet Explorer updated you will virtually eliminate the risk from 99+% of the commercial exploit kits being used.