: 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.
: A tiny but powerful worm that slowed the entire internet to a crawl in just minutes by targeting SQL servers. The Top 10 Worst PC Viruses of All Time – AZMATH
: Notorious for spoofing sender addresses, making it appear as though the virus came from a trusted contact. : One of the most famous social engineering
: A sophisticated worm that created a massive botnet of millions of infected Windows computers, targeting government and business servers. : A sophisticated worm that created a massive
: A worm that exploited a vulnerability in Microsoft IIS web servers to launch DDoS attacks, including one targeting the White House website.
: A massive ransomware attack that encrypted files and demanded Bitcoin payments, famously crippling the UK's National Health Service.