Beware of Hardware keylogger

Hardware key-logger is a tiny device that plugs in between a keyboard and computer, and  is a very popular way of capturing and storing keystrokes from keyboard to their internal memory. Hardware keylogger are coming with 512 KB upto 2 GB memory. A 512 KB keylogger can store more than 512000 captured key strokes. It can capture data for 3 month with 8 hours working on computer daily. Can you imagine that how many secret information can be stored if the memory is 2GB. 

Advantage of hardware keylogger over Software keylogger:
  • Hardware keyloggers are not OS dependents, hence can work on any OS.
  • It does not interfere with any program running on the target machine and hence cannot be detected by any software, but software keyloggers are mostly detectable by good anti-viruses.  
  • Software keyloggers can be fooled by sending encrypted or fake keystrokes, but in case of hardware keylogger as it is directly inline with keyboard, so cant send fake keystrokes.http://www.techbyte4u.com/
  • Hardware can begin capturing from the moment a computer is turned on and are therefore able to intercept BIOS passwords.




Hardware keylogger can be of two types according to its connection type with Keyboard:-
1. PS2
2. USB



Detecting and Defeating Hardware keyloggers:-


Detecting of hardware keylogger is only possible by inspection. If you are using a public computer always check the connection of  keyboard connector cable and computer to make sure it is free from any tiny device as shown in picture below.http://www.techbyte4u.com/

 But hardware keyloggers cant always detect like this, they can be inbuilt in keyboard, they can be wireless, or they can be hided through any other way so that you cant see them. So you need to be so alert while using a public computer. 

Also some hardware keyloggers cant capture correctly Alt+Numpad keystrokes(according to irongeek), so while you type username/ password you can use Alt+Numpad to write. 



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