How do you know if you have a virus on your computer?

If you notice any of the following issues with your computer, it may be infected with a virus:

Slow computer performance (taking a long time to start up or open programs)
Problems shutting down or restarting.
Missing files.
Frequent system crashes and/or error messages.
Unexpected pop-up windows.

How do you clean viruses off your computer?

If your PC has a virus, following these ten simple steps will help you to get rid of it:

Step 1: Download and install a virus scanner.
Step 2: Disconnect from internet.
Step 3: Reboot your computer into safe mode.
Step 4: Delete any temporary files.
Step 5: Run a virus scan.
Step 6: Delete or quarantine the virus.

What is the most powerful computer virus in the world?

The biggest computer virus ever is the Mydoom virus, which did an estimated $38 billion in damages in 2004. Other notables are the Sobig worm at $30 billion and the Klez worm at $19.8 billion.

Who made the I Love You virus?

Onel De Guzman

What is the first computer virus?

Following Creeper, which was isolated within the realm of researchers, Elk Cloner was the first virus to be detected in the wild. Written in 1982 by a 15-year-old, it was a boot sector virus that infected Apple II computers.

Who made Creeper virus?

Bob Thomas

Does the Creeper virus still exist?

One significant difference between Creeper and other major viruses was that the Creeper erased its older versions as it duplicated itself. While it is now widely credited as being the first computer virus, the concept of a computer virus did not yet exist at the time of its creation in the 1970s.

Are worms a virus?

Worms are a self-replicating type of malware (and a type of virus) that enter networks by exploiting vulnerabilities, moving quickly from one computer to another. Because of this, worms can propagate themselves and spread very quickly – not only locally, but have the potential to disrupt systems worldwide.

What is Trojan Horse example?

Here is one example of how a Trojan horse might be used to infect a personal computer: The victim receives an official-looking email with an attachment. The attachment contains malicious code that is executed as soon as the victim clicks on the attachment.