: One of the most famous social engineering attacks, disguised as a love letter that, once opened, sent itself to everyone in the victim's Outlook address book.
: The first major mass-mailing virus of the modern era, which forced many large companies like Microsoft to shut down their email systems entirely. The Top 10 Worst PC Viruses of All Time – AZMATH
: A tiny but powerful worm that slowed the entire internet to a crawl in just minutes by targeting SQL servers. : One of the most famous social engineering