Keeping a Windows PC safe can demand a high degree of vigilance -- if cars needed the same constant care and feeding, the Beltway would revert to a country byway.
And yet all these attacks by viruses, worms, spyware and browser hijackers could have been prevented with some initial effort. It's completely feasible to put a computer on the Internet -- even one running Windows, the most attacked, least secure operating system around -- and never suffer a single successful attack.