What is the most dangerous computer virus of all time?

The most dangerous computer virus of all time is the WannaCry virus. This virus was responsible for causing over $4 billion in damages and affected over 200,000 computer systems in 150 countries. The WannaCry virus encrypted computer files and demanded a ransom be paid in order to decrypt the files. This virus caused a lot of panic and disruption and was particularly dangerous because it exploitedd a security flaw in the Windows operating system.

What are the top 5 most dangerous computer viruses of all time?

The top 5 computer viruses of all time are:

1. ILOVEYOU

This virus was first released in 2000 and quickly spread around the world, causing an estimated $5.5 billion in damage. The ILOVEYOU virus was spread via email, with the email containing the virus disguised as a love letter. Once opened, the virus would send itself out to everyone in the victim’s address book.

2. Melissa

Named after a topless dancer in Florida, the Melissa virus was also spread via email. This virus would corrupt Word documents and then send itself out to the first 50 people in the victim’s address book. The virus caused an estimated $80 million in damage.

3. Code Red

This virus was released in 2001 and quickly spread, infecting over 350,000 websites. The virus would deface websites with the message “Hacked by Chinese”. The Code Red virus caused an estimated $2 billion in damage.

4. Sasser

This virus was released in 2004 and affected over 1 million computers. The virus would exploit a flaw in the Windows operating system, causing the affected computers to crash. The Sasser virus caused an estimated $18 billion in damage.

5. Mydoom

This virus was released in 2004 and quickly became the fastest-spreading email virus at the time. The virus would attach itself to email messages and then send itself out to everyone in the victim’s address book. The Mydoom virus caused an estimated $38 billion in damage.

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