Hardware Key logger
Hardware key loggers are small lipstick shaped devices that are
placed inline, between your keyboard and computer. Since they are
connected near the back of the computer, which is often hidden from
site, these devices are rarely noticed or detected, as figure 2
indicates. Unfortunately, this easily overlooked device has the
power to record hundreds of thousands of keystrokes, including
passwords, credit card numbers, or adulterous chat conversations.
The hardware keylogger is a very straightforward device. It
simply captures the electronic signal from the keyboard and stores
it in a local data buffer within the tube shaped device. In order to
extract the data from the internal buffer, the device constantly
monitors the incoming keystrokes until it detects a secret password.
This will in turn trigger a program located on the keylogger that
allows the user to output the captured data into a waiting program,
such as Word or Notepad. While this is usually done at the target
computer after hours or when the target is away on an errand, it is
just as simple to remove the keylogger for future analysis at any
computer. |
