1.5 Technical Channels of Information Leakage
57
Fig. 1.27 BT PS/2 Extended hardware keylogger with Bluetooth data transfer: front view (a); side
view (b)
to 2 GB flash drive. Up to 2,000,000 keystrokes or 500 pages of text are recorded on
a 1 MB flash drive. The information recorded on the flash drive is encrypted using a
128-bit key [31, 32].
Keyloggers are issued in the form of adapters or extension cords connected to the
cable connector of the keyboard and the system unit (Fig. 1.28). Their installation
does not require special skills and takes up a few seconds (Figs. 1.29, 1.30 and 1.31)
[31, 32].
If there are many different cables connected to the PC system unit, it is quite
difficult to detect a keylogger.
Fig. 1.28 Physical configuration of hardware keyloggers recording the intercepted information on
a flash drive
Fig. 1.29 Connecting a keylogger in the form of an adapter to a four-wire (PS/2) keyboard interface
57
Fig. 1.27 BT PS/2 Extended hardware keylogger with Bluetooth data transfer: front view (a); side
view (b)
to 2 GB flash drive. Up to 2,000,000 keystrokes or 500 pages of text are recorded on
a 1 MB flash drive. The information recorded on the flash drive is encrypted using a
128-bit key [31, 32].
Keyloggers are issued in the form of adapters or extension cords connected to the
cable connector of the keyboard and the system unit (Fig. 1.28). Their installation
does not require special skills and takes up a few seconds (Figs. 1.29, 1.30 and 1.31)
[31, 32].
If there are many different cables connected to the PC system unit, it is quite
difficult to detect a keylogger.
Fig. 1.28 Physical configuration of hardware keyloggers recording the intercepted information on
a flash drive
Fig. 1.29 Connecting a keylogger in the form of an adapter to a four-wire (PS/2) keyboard interface