What is the most pricey virus in history?

The most pricey trojan horse in history is the Love Bug infection, which was released in 2000. This infection caused an estimated $5.5 billion in damage worldwide, making it the most expensive infection ever. The Love Bug virus was a mass-mailing worm that infected over 45 million computer systems in simply a couple of days.  page The infection spread quickly by emailing itself to everyone in the victim's address book. When a computer was contaminated, the virus would erase crucial files and spread itself to other computers. The Love Bug infection was eventually visited a group of antivirus researchers who created a vaccine that could protect computer systems from the infection.