Take care of these things when you visit cyber cafe.

If you visit a cyber cafe and find find any black pin attached to the CPU as shown in the picture, do not use that system. This pin is actually a connection which saves all your data you enter in the system. It is a hardware key-logger, very powerful, it records each and every action on your system. It is a risk to your privacy over the net, at risk are passwords, banking, or any other data you enter.