Even the most cautious computer user faces a number of threats in the form of malicious software. Here are two common types:
Viruses
Viruses are programs that come with executable files, programs, or applications, usually hidden in email attachments or downloadable files. When you open these files, the virus makes copies of itself and saves these copies onto your computer. Some viruses are merely the equivalent of annoying pranks, making error messages, annoying pictures, or irritating sounds appear on your computer. Other viruses are more harmful. They can delete existing files on your computer, or cause your computer to freeze or crash frequently.
Spyware
Spyware is a type of malicious software that gathers information from your computer. Aside from being able to monitor your activities online, such as checking your Internet browsing history, spyware programs can also collect the usernames and corresponding passwords that you use on various websites. Spyware can also track any personal information that you enter online, such as credit card numbers when you buy something. The effects of spyware can range from the merely annoying, like pop-up windows and ads constantly coming up, to truly harmful. Spyware can change the settings on your computer, affect your connection speed, and destabilize your computer. A spyware infection can cause many programs to freeze or even make your computer crash entirely. Also, information gathered by spyware can be used to commit crimes such as identity theft.
With these threats to your computer, it’s important to safeguard against them by installing security software.
