Key Loggers are the small malicious scripts, which are planted in your PC to spy on your private data and passwords. They are memory resident programs, which store your important user-ids, passwords and other valuable information, as you type that into your keyboard. This data can later be misused by the master mind behind the operation, and you might not be knowing it at all.
So, how to avoid Keyloggers
I have just come across a nice Firefox extension KeyScrambler, which does the job in a nice way. Its an extension, OMG I love firefox just for the extensions themselves and one day will dedicate a complete blog for them.
Oops, I was talking about KeyScrambler, a Firefox extension, which encrypts your keystrokes at the kernel driver level to protect your login information from keyloggers.
KeyScrambler defeats keyloggers by encrypting your keystrokes at the keyboard driver level, deep within the operating system. When the encrypted keystrokes reach your browser, KeyScrambler then decrypts them so you see exactly the keys you’ve typed. Keyloggers can only record the encrypted keys, which are completely indecipherable.
Check it out at the Mozilla Addon site.