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Maximus said:No programs in the world can defend you from holes in your OS. Upgrading to SP3 will address those issues. Try this Prorootect. Backup your system onto an external HDD. Image it that is. Then download and install SP3 and see what happens. I bet you will be just fine. I just fine it odd that you keep coming up with excuses of why not to install SP3 but none of them are justifiable. As I previously mentioned the first step in keeping malware free is having an up to date OS. This is actually in Jacks malware removal/prevention steps.
Note: No where am I arguing or flaming. This is security advice. Thanks.
WinAndLinuxTutorials said:Please, get an antivirus. These years the internet became a very dangerous place. And don't forget Windows XP has many vulnerabilities, which makes it a weak OS. Get something Like Avast Free, AVG Free, Avira Free, Comodo Intrnet Security (for advanced users).