Worst Computer Virus

A computer virus can be your worst nightmare. The journey of computer viruses was started in January 1986 by two brothers Basit and Amjad Farooq Alvi. They created the first computer virus named Brain. From then it’s evolving, advancing, and developing every single day. And on the internet, there are over 1,00,000 known computer viruses. And in this article, we will talk about the list of Worst Computer Virus on the internet.

Many people have no idea what damage computer viruses can do to you (instead of crashing & lagging your computer.) Let’s discuss a real case study on a computer virus:

  • With the greater fear of Covid 19, hackers have developed a software name CovidLock, which ensures the users to give them more & exclusive info about the disease. But after installing the app, it encrypts the android data and blocks the users’ access to the data. And to get the access back, the user has to pay 100 USD ransom

To get the List of Worst Computer Virus and Ways to get rid of a virus, read the article till the end. 

Also read: Is Omegle Safe? How it Affects You & Your Device? 

So without any further ado, let’s dive deep into the cream of the article. 

List of Worst Computer Virus

Here’s the List of Worst / Deadliest Computer virus ever


ILOVEYOU (as known as Love Bug or Love Letter for You,) is one of the worst computer viruses for Windows users. The virus started spreading in May of 2000 and infected over ten million Windows users. 

The virus uses emails to spread, and it may just look like a love confession to the victim or recipient but could be your next worst nightmare. 

It spread itself out to everyone in the email list, makes your pc unbootable, hacks your pc password, and sends it back to the virus creator. 

Total Estimated damage $10 – $15 billion.


Mydoom (also known as Norwag) is the next worst computer virus in the list. The virus started spreading in 2004 and costed damage of $38 Billion (Estimated.) The virus uses emails to spread.

The virus Mydoom hacks the IP address from the victim’s pc and performs various DDoS attacks. The virus was used to shut down targeted servers and websites online.

The virus cost the inflation cost of $52.2 billion makes it one of the worst computer virus ever.


Cryptolocker, a Trojan horse ransomware, was released in September 2013. The virus uses emails and encrypted users’ data to spread out. The virus costed estimated damage of $665 Million by hitting more than 5000 companies. 

The virus encrypts user data and then blackmail the users for a settled amount through bitcoin. It sets a certain limit of time pay in exchange for users’ data. 

It was an inspiration for many wannabe hackers. 

Can iPhones Get Viruses? How to Remove Virus from iPhone?


Another worst computer virus is Melissa was created in 1999. The virus was cloaked as the list of passwords of po*n sites, which results in high demand. The virus sends itself through email.

After click on the word document and opening the links they get something unexpected.

Later the creator David L Smith got 20 months of prison time and a $5,000 fine. But the total inflated damage was over $80 Million.

Code Red

Code Red was first witnessed in 2001. The virus costed the damage over $2.4 Billon. The virus used to display the words “Hacked by Chinese!” and penetrated over ninety million hosts.

The virus has distributed a DDoS attack on the U.S. White House’s website. Later they were forced to change the IP address of the website. 

It is one of the worst computer virus in history.


Zeus is another worst computer virus on the list. It was created in 2007 and cost the estimated damage of $220 million.

The virus uses other computers to do illegal tasks like gambling. The virus can also hack your passwords and even your credit card information.

The virus is been able to get confidential information from large companies like NASA, The Bank of America, Amazon, etc.

It is one of the worst computer virus in history.

How to Get Rid of a Virus?

remove virus from pc

(Read the complete guide on How to get rid of a virus)

Use the given steps to remove a virus from your PC and if you are a Mac user, then click on the above link to jump on the virus removing guide.

  • Install an Antivirus

On the internet, there are tons of applications that allow the user to run an antivirus scan and helps to remove the virus/malware for free or at least provides the user a free scan to remove the virus/malware on their own. You can install Antivirus like Norton, McAfee, Kaspersky, Malwarebytes, etc.

  • Disconnect from the Internet

Now, you have the vaccination of your virus, and it’s time to disconnect from the internet so that the virus/malware can not share your data. You can turn off the wifi or turn on “Airplane Mode” to move to the next step.

  • Run the Safe Mode

Follow the given steps to run the safe mode: 

  • Hold the “Shift Key,” then you have to restart your pc, by clicking on the power icon and then click on Restart.
  • After that, your pc will restart with a menu on the screen. Choose the Troubleshoot Option.
  • Choose the Advanced Options.
  • Click Startup Settings.
  • Then, Restart.
  • Now press the F5 key to restart your device in Safe Mode. (Note: Turn off your data)
  • Delete the temporary files using “Disk Clean Up”

There’s a high chance that the virus/malware is prowling in Windows temporary files. So use the following steps to remove the temporary files/folders from your pc.

  • Open search bar on task manager.
  • Search Disk Cleanup, and open the result.
  • Select the drive you want to clean.
  • Then hit OK.
  • Under the option “File to Delete,” select the temporary file you need to remove.
  • Click OK again to apply changes.
  • Run an Antivirus Scan

Now, it’s time to use the antivirus software you’ve installed earlier. Antivirus helps the user to find and remove the virus/malware hiding in your device for free. Now follow these steps: Open the Antivirus, run the scan, and wait for the antivirus to complete the scan.

  • Delete the Virus 

After the scan has complete, the list of virus/malware-infected files detected by your antivirus software will display on your screen. And to remove those threats, all you have to do is click on the remove/delete/quarantine button.

  • Reboot your PC

Now, after you’ve removed all the virus/malicious files founded by the antivirus, you have to restart your pc.

  • Change the Passwords to Stronger ones

After restarting the pc, you have to update your passwords to stronger ones. One can start updating from the main email id to the other important sites.

  • Update the Software to the Latest Version

To finalize this virus/malware removal, we highly suggest updating your windows, browser, and other software to their latest updates. Which can help you fix your PC lags and other vulnerabilities. And is the final step of “How to Get Rid of a Virus.”

Safety Tips from WAP News

After reading about these worst computer virus, one might need these safety precautions for safe internet browsing in the future.

  • Install an Antivirus in your Device
  • Keep your Antivirus up to date
  • Do not use Public Wifi (Try at your own risk)
  • Run Regular Antivirus Scans 
  • Do not Click on Spammy Links
  • Backup your Files Regularly
  • Use strong passwords (For better protection.)

End of The Line-

These are some of the worst computer virus in history. If you think we are missing any point on the list of worst computer virus, let us know in the comment section, and we will add it to the article ASAP. Also, check our another article on Is Bluestacks Safe? All You Need to Know About it.

Keep visiting WAP News for more information related to the best applications and technology.

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