Common Types of Spyware Infection

For internet users spyware and adware are arguably the biggest threat to a computer. Recent research has shown that over 60% of all computers have a spyware or adware application hidden somewhere on the hard drive. A computer user is likely to be totally ignorant of its presence.

There is not just one form of spyware, there are in fact hundreds of variations, which makes it very difficult for computer novices to even know if they are in danger. Of the most common types of spyware; browser hi-jackers, keyloggers, dialers and toolbars are those most normally found.

Browser Hi-Jackers – these are some of the most irritating of adware applications and will take over internet browsing if allowed. This is normally seen with a change in the default homepage to a website of the infections choice. Additionally there may also be a rash of pop-ups appearing during browsing.

Toolbars – toolbars are a form of browser hi-jack. Most people will have a Google or Yahoo toolbar installed when they go browsing but spyware and adware programs can also install their on toolbars. These toolbars will keep a record of the websites that a computer user visits, and will then create pop-ups relevant to those sites. Additionally when search engine queries are made further pop-ups will be seen.

Keyloggers – keyloggers are a form of spyware software that will create a log of anything typed on a computer. When given the chance these spyware programs will then transmit usernames, password, credit card and bank details to the spyware originator. These programs can do a lot of damage.

Dialers - this form of spyware will take over the modem to dial their own phone numbers. This is quite easily done without a computer user even being aware. This can lead to pornographic sites being dialled at exorbitant phone rates for as long as the dialer stays connected.

With so many threats, those listed are actually a small proportion of all threats, it is vital that a computer connected to the internet is kept secure. Spyware can often stay hidden for a long time so it is essential that reputable anti-spyware applications are installed on a machine. These applications will be able to locate any spyware that may be hidden away threatening the safety of the machine.