I’ve shared a virtual keyboard grease monkey script that could help defeat keyloggers, but some argue that virtual keyboards are also easy for logging keystrokes, and if you also feel the same then you can try KeyScrambler Personal which is a browser addon that scrambles keystrokes by encrypting them, so that keyloggers don’t record the actual keystrokes but store only the encrypted keystrokes which cannot be deciphered.
KeyScrambler Personal protects all your inputs against known and unknown keyloggers in IE, Firefox, and Flock Browsers : like your login credentials, credit card numbers, passwords, search terms, Java, Flash, PDF Forms, web email, etc.,
Watch KeyScrambler In Action :
Keyscrambler encrypts data at kernel driver level of the OS so that the keylogger only see the encrypted data, and when the data reaches the desired applications keyscrambler decrypts the data and making only encrypted data available for keyloggers thus protecting your keystrokes.
The Premium Edition of KeyScrambler can protect not only your browser but also many desktop applications aswell.
It support Windows 2000, 2003, XP, Vista (32-bit and 64-bit).
Download KeyScrambler Personal Edition (1.2 MB)
Source : Whoismadhur