Malicious software (mal-ware) is a form of computer program designed with malicious intent. This intent may be to cause annoying pop-up ads with the hope you click on one and generate revenue, or forms of spyware and viruses that can be used to steal your identity or track your activities.

Malware can be acquired via clicking on links on suspect sites or pop-ups. Malware is a very common cause of computer problems

A computer virus attaches itself to a program or file so it can spread from one computer to another, leaving infections as it travels.

Much like human viruses, computer viruses can range in severity; some viruses cause only mildly annoying effects while others can damage your hardware, software, or files.