about computer

There is a type of program called "KeyLogger", it can record what you have typed using the keyboard. This kind of program may included in some software. Most likely, it may included in "Key generator", which used by the software crackers. After it had logged what you have typed, it will use your Internet connection to send to log file to the maker of the KeyLogger. Other than keylogger, some type of trojan horse can also perform this function. There are many of them, and some can even download from the Internet by using the keyword "keylogger" on Google.

There are many methods to solve it. As the keylogger requires an Internet connection to send back the log file, ( Assuming that the hacker is from the Internet. ) using a firewall can prevent the keylogger sends back the log file if configured properly. Anti-spyware can also detect this kind of program and remove it from your computer. Furthermore, on-screen keyboard available in Windows XP can prevent that by not using the keyboard. The picture below is the on-screen keyboard of Windows XP.


圖片參考：http://www.freewebtown.com/dennistang/knowledge/images/onscr_kybd.png