

Price protection, price matching or price guarantees do not apply to Intra-day, Daily Deals or limited-time promotions. Prices, specifications, availability and terms of offers may change without notice. Stuxnet: This worm is reported to have destroyed Iranian nuclear centrifuges by sending damaging instructions.Conficker: This 2009 virus still infects many legacy systems and could do significant damage if it ever activates.In 2020, there’s now more malware on Macs than on PCs. Flashback: A Mac-only virus, Flashback infected over 600,000 Macs in 2012 and even infected Apple’s home base in Cupertino, Calif.FBI estimated cleanup and repair costs at $80 million. Melissa: The most dangerous computer virus in 1999, Melissa sent copies of itself that looked like NSFW pics.Explorezip: This worm used fake emails to spread to every machine on thousands of local networks.Sircam: A computer worm from 2001 that used counterfeit emails with the subject line, “I send you this file in order to have your advice.”.Tanatos/Bugbear: A 2002 keylogger virus that targeted financial institutions and spread to 150 countries.Storm Worm: This worm showed up in 2007 and attacked millions of computers with an email about approaching bad weather.Its financial cost has been pegged at $10.4 billion, but not reliably.

Swen: Written in C++, the Swen computer worm disguised itself to look like a 2003 OS update.Yaha: Yet another worm with several variants, thought to be the result of a cyber-war between Pakistan and India.Mimail: This worm tried to harvest data from infected machines to launch a string of DDoS attacks, but was relatively easy to remove.
