Discover the common signs that your computer may have a virus and how to identify potential threats to your device.

October 23, 2000 Web posted at: 10:21 a.m. EDT (1421 GMT) by Kim Zetter (IDG) -- Virus: A self-replicating piece of computer code that can partially or fully attach itself to files or applications ...

Viruses, worms, and Trojans are three types of malicious software (malware) that can cause harm to computer systems and networks.

Right? In truth, a virus is a very specific type of program with the unusual ability to replicate itself, like a biological virus.

The virus freezes everything on the computer, and flashes the word "cookie" on the screen. To get rid of it, the infected user would have to type the word "cookie." ...

How can your computer get a virus, trojan, work or spyware? What are the ways malware can infect your Windows computer? What types of files carry viruses and malware? We will touch upon these ...

Use this guide to the most common computer virus symptoms to keep your PC healthy and malware-free.

While many people believe a 15-year old created the first computer virus in 1982, I'm not so quick to agree.

The first type of modern ransomware, known as scareware, relies on computer users’ unfamiliarity with the inner workings of important software—and their profound fear of breaking their machines.