
Spyware is any program which can monitor activity on a computer and/or alter the user's experience in complete secrecy. For example, some spyware is used to log all keystrokes, websites visited and programs currently in use such as instant messaging software or email. The information could then be compiled and transmitted to an unknown third party (either a legitimate company or a hacker) via email without the user's knowledge or consent. Since most users wouldn't agree to have their privacy invaded, spyware is frequently included with legitimate software applications such as chat or file sharing programs or through some other concealment. Information about these programs is often hidden in the end user license agreement (EULA). However, legitimate business isn't the only benefactor from spyware; large criminal syndicates use spyware to gain access to personal information as well to commit numerous types of cyber crimes.
Spyware isn't normally designed to damage your computer; this is simply a by-product of the program's functions. It normally benefits the spyware writer for these programs to run silently on a machine, for as long as is possible, giving them ample time to harvest the information they are targeting - whether it is the user's surfing habits, products purchased or passwords and financial details. However, spyware is often bundled with trojans and other malware that can harm a computer system. Some spyware can also remove security features on your machine or exploit existing flaws to give a remote user access to the infected computer or to leave the machine vulnerable to other malware attacks. These programs often go unnoticed until there are several installed on the infected computer. It is at this point that the victim may experience slower system/network performance, a barrage of pop-up ads and changes to their web browser such as redirects.
Spyware applications are notoriously difficult to remove because they are well hidden on the host machine and many work in pairs. So, if one program is deleted, the remaining program will re-spawn the deleted portion. Since antivirus software cannot be relied on as complete protection from malware, several companies have created specialised tools to detect and remove spyware from infected files and computers. However, these antispyware programs are not designed to replace your antivirus program. In order to achieve optimum protection, it is necessary to use both antivirus software as well as an antispyware tool. Multiple antimalware programs used in conjunction with a good firewall can help to secure your computer from many spyware threats.
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Spyware symptoms and characteristicsIt is often difficult to determine if your computer has been infected by spyware. These programs are designed to run in the background and draw as little attention as possible. However, if you notice any of these symptoms, it might be time to examine your computer more thoroughly. |
What is the difference between spyware and adware?Often misunderstood and grouped together with other more nefarious spyware and malware, adware has earned a bad rap through association. However, adware and spyware are not the same. |
How to protect your computer from spywareSpyware has become an internet nuisance, stealing personal information, filling your screen with pop-ups and even crashing your computer or network. However, there are some steps you can take to help reduce your chances of being infected. |