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What are the most dangerous computer viruses of all time?

There is no definitive answer to this question as it largely depends on individual perspective and opinions. However, there are certainly some computer viruses that have caused widespread damage and havoc, and are generally considered to be the most dangerous of all time. Here are just a few of the most destructive and feared viruses in history:

The ILOVEYOU virus is a perfect example of how a small piece of code can cause massive devastation. This virus, which was first released in 2000, quickly spread around the world via email, causing an estimated $5.5 billion in damage. The virus wreaked havoc by overwriting important system files and sending itself out to everyone in the victim’s address book.

The Melissa virus was another devastating email-borne virus that emerged in 1999. Named after a topless dancer in Florida, Melissa was spread via email attachments and quickly spread to tens of millions of computers. The virus caused significant disruption as it overloaded email servers and impacted businesses around the world.

The Code Red virus first appeared in 2001 and quickly spread to over 250,000 systems in just a matter of hours. The virus took advantage of a vulnerability in Microsoft’s IIS web server software and caused widespread damage, defacing websites and bringing down server networks.

The SQL Slammer worm was a particularly destructive piece of malware that appeared in early 2003. The worm took advantage of a buffer overflow vulnerability in Microsoft SQL Server and rapidly propagated itself, causing millions of dollars in damage and bringing down many critical servers, including those belonging to the US Department of Defense.

The Conficker virus is a modern day example of a truly destructive and feared computer virus. First appearing in 2008, the virus has since infected millions of computers and continues to cause significant disruption. The virus is notable for its ability to evade detection and its persistence, making it a particularly dangerous and feared threat.

What was the most widespread computer virus of all time?

As of May 2019, the most widespread computer virus of all time is the WannaCry ransomware virus. WannaCry is a self-replicating virus that infected over 230,000 computers in 150 countries in May 2017. The virus encrypted files on victims’ computers and demanded a ransom of $300-$600 in Bitcoin in order to decrypt the files. The WannaCry virus took advantage of a vulnerability in Microsoft Windows that was originally discovered by the U.S. National Security Agency (NSA).

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