: 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.
While "AZMATH" appears to be a specific niche or community-driven list, the consensus across major tech resources like HP Tech Takes and Britannica highlights a consistent group of notorious digital threats. These viruses and worms are ranked by their financial impact, speed of infection, and sheer destructive capability. The Top 10 Most Notorious PC Viruses The Top 10 Worst PC Viruses of All Time – AZMATH
: A massive ransomware attack that encrypted files and demanded Bitcoin payments, famously crippling the UK's National Health Service. : One of the most famous social engineering
: 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 Most Notorious PC Viruses :
: Widely considered the costliest outbreak in history, causing an estimated $38 billion in damages (over $52 billion adjusted for inflation).