The most pricey bug in history is the Love Bug virus, which was released in 2000. This virus caused an approximated $5.5 billion in damage worldwide, making it the most costly virus ever. The Love Bug infection was a mass-mailing worm that contaminated over 45 million computers in just a few days. https://creaturesincrisis.org/?p=720 The infection spread rapidly by emailing itself to everyone in the victim's address book. As soon as a computer system was infected, the virus would delete essential files and spread itself to other computer systems. The Love Bug virus was eventually stopped by a team of antivirus researchers who produced a vaccine that might safeguard computer systems from the infection.