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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.