What Are Keyloggers?
Keyloggers are specially devised programs that are installed inside a computer via a Trojan, a virus or a worm. Once inside, the keylogger will auto execute and start recording all the key strokes made by the computer user. Once a determined period of time has gone by, the keylogger will send the keystroke information to the hacker who sent this infectious software.
Then the hacker will start searching key combinations that can lead him to determine the password for determined web pages. This simple and effective method is a favorite among hackers since it can provide them with lots of private information from their victims.
Many computer users have more than one email account, especially if they use the messenger services from multiple providers, like Microsoft's Hotmail, Yahoo's Email or AOL email. It doesn't matter if you have one or many email accounts, every one of them may be a victim of a hacker. Even with the security measures imposed by the companies, Yahoo password hacking or hotmail hacking still exist. And it's very improbable that will disappear.
So, if you want to protect yourself from people who are hacking yahoo accounts or whose whole purpose in life is to do some MSN hacking, then increase the number of special characters in your password and try not to access your email account from a computer that is not yours. And that goes to IM's too. The ability for hacking yahoo messenger or any other IM provider it's a latent danger for all of us.
some of the examples of keyloggers are :
golden keylogger
elite keylogger
perfect keyloggger
family keylogger... and many others... soon i'll be posting their viru free links... keep checking