5 Examples of a Computer Virus That Can Wreak Havoc On Your Network

The computer virus has been the bane of every MSPs existence ever since the internet was booming in the 1990s. Yes, the internet, as we know it, is that old – there have been viruses and cyberattackers. Most past computer viruses didn't do as much damage as people have begun today these days. They were simple worms that would overload systems and cause them to crash. These hackers have since started to use these backdoor programs to infect numerous computers and gain access to millions of computers over the century thus far, and it looks like it's only getting worse.

So, whatever happened to these computer viruses? Do they still exist? The answer is, "Yes." And if a person decides just to be enough of a jerk, you can still get them on your computer and infect everyone you know (and even those you don't). We've compromised a list of some of the worst computer viruses of the yesteryear that are still out there floating around the world wide web.

1.  The "I Love You" Virus.

The I love you computer virus emerged in May of 2000 and was a computer worm that infected millions of computers worldwide (approximately 10% of all computers were infected with the virus). U.S. governments had to take their messaging platforms off of the internet and maintain them locally to prevent infection of the virus. The Filipino creators used social engineering at its worst to send the file, which posed as a text file, but Windows had a vulnerability that did not show that it was, in fact, an *.EXE file. It would then email every single person on a user's contact list and overwrite numerous files with copies of itself, destroying computer systems.

It was so bad that it even did so on webmail. Since there were no laws back then about malware, the two that created the virus were able to get away with it, but it led to the first Internet E-Commerce Law t put in effect.

2.  Code Red Computer Worm

Code Red was the first computer virus ever named after soda, no seriously. It got its name because the two men in 2001 that discovered the virus were drinking a particular version of Mountain Dew?. This worm attacked a computer's Microsoft IIS server, which is terrible since back then, a lot of companies had local intranets and even hosted their websites from their regional offices.

It ended up exploiting and create numerous copies of itself, but because there was a bug, it was nearly endless – therefore eating up a ton of network and system memory. It then launched a DDoS (denial of service) attack on numerous websites; one of them was the White House's website. It also acted as a trojan horse, allowing the exploiters to access the computers remotely. It would leave a message that said "Hacked by Chinese!" on a website, and it cost billions of dollars of damage to a third of the world's IIS servers.

3.  Behold the Mighty Zeus

Zeus, or Zbot, was a trojan horse that infected computers and gave computers in 2009 access to a lot of a system's data. It was a keylogger that was affected primarily with phishing scams – much similar to those that are more prominent today. It allowed the owners of the virus to compromise numerous banks, giving people access to a large amount of people's real bank accounts (and their identities). It also was used to hack people of their social network and email accounts.

More than a million computers ended up getting infected with the computer virus, and there was $70 million stolen from companies and people. There were a hundred people arrested in this elaborate virus ring, and the creator publicly announced his retirement (or so we think).

4.  MyDoom Computer Virus

MyDoom was the worm that was the quickest and most deployed since the ILOVEYOU computer virus. It's said to believe that creator was paid to make it, and as it was named by a McAffee employee who discovered that there was a line of text in the program's code that read "MyDoom." It, too, replicated itself as an email attachment and sent it to everyone in the book. It also goes into every P2P software app – like Napster, uTorrent, and others. Then the computer virus does a lot more damage than it does when creating anything.

No computer was supposedly safe as it opened up a backdoor to allow a user to access the local device and launches a DDoS attack on the SCO Group. It was used to cause problems with the company due to a legal discrepancy in which the SCO group – the ones responsible for suing over Linux code and trying to copyright and claim the system. This virus is still in play and sometimes found to this day.

5.  CryptoLocker

One of the most commonly affected computer viruses to this day, the CryptoLocker, was made by a Russian man who was arrested and forced to be fixed quickly. The creator of the virus ended up infecting about 500,000 computers who paid him in total approximately $3,000,000 to unencrypt files that are infected by the computer virus.

CryptoLocker is a real frustrating virus that destroys computers as it renames almost every .exe file, personal office documents, and even image files and then renames them. The infected user can't browse the internet, and the only page they can go to is a payment page that is to pay the ransom to get their files decrypted.

The Best Way to Protect with SentinelOne AI Platform

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