Anti-spyware software provides a wonderful option to eliminate unwanted software that could have been installed on your computer without your knowledge. These programs may redirect web searches, alter results of searches or display excessive pop-ups. They could cause computer performance issues by hogging processor power, memory and disk space that could lead to performance problems like applications freezing or system crashes. Anti-spyware software will detect and fix these issues to make your computer run at a high speed.

Another benefit of anti-spyware is that it prevents criminals from stealing your personal data. Cybercriminals may gather data about your Internet browsing habits, email activities, and even download activity. These are then used to hack into your accounts, steal money or commit identity fraud. This data is often given to third-party companies to market their products, too. In addition, if you are running a business, keylogger malware can gather information about your customers and employees to be used by malicious hackers.

Another drawback of spyware is that it may be difficult to remove once it has been infiltrated into a computer. It might, for instance it will not allow attempts to remove or shut it down or re-spawn after it is killed. In some cases, rebooting the affected computer using safe mode may give an antispyware application a better chance to detect and kill persistent malware. Alternately, you can try eliminating the programs that are causing problems by killing their process trees or using registry cleaning tools.