In only a couple of years we computer users have learned a lot about online threats. There is no need to explain what "spyware" means -- we all know it. Or do we?

If software collects information without users' knowledge and transmits it, such a program is usually automatically labeled "spyware" no matter how valuable this information is. It can be either relatively innocuous code for gathering users' browsing habits -- or extremely dangerous software created specially for unsolicited monitoring and committing cybercrime like identity theft, or espionage.

In the classification from SpyAudit they the latter are called System Monitors. Here belong such programs as keyloggers and more advanced keylogger-based programs, which can intercept not only keystrokes, but also capture text from application windows and clipboard contents, make screenshots