How do I get rid of Security Tool?

Security Tool is really hard to get rid of. I would offer you free manual removal instructions but this is both very hard and dangerous if you are not a computer expert. If you remove the wrong registry files you can actually do WORSE damage than the virus. The best thing to do is just get a specialized Security Tool removal tool. I highly recommend the one I use. You can scan your system for free with it at:

http://www.spyware-fix.net/

Security Tool is just a parasite, here is simple way how to uninstall it:

http://www.spyna.com/parasite/rogue-anti-spyware/s...

remove it manually. this way it won't cost you a thing. here's manual removal guide http://www.spywarevoid.com/remove-securitytool-sec...