To ensure protection against industrial espionage and technical means of obtaining information, there are several areas and general rules that companies can apply. Here are the main points regarding technical means of protection:
protection from surveillance and photography;
protection against eavesdropping;
protection against interception of electromagnetic radiation.
General principles of protection against technical means of collecting information h3
moving your company's stockholder data package technical devices (radiating sources) outside the controlled area;
if possible, place your company's technical equipment (generating radiation) in basements and semi-basements;
placement of transformer substations providing power supply to the protected technical equipment within the controlled area;
minimization of parallel wiring of information circuits with power supply and grounding, installation of filters in electrical circuits;
disconnection of technical devices containing elements of electroacoustic transducers from communication networks during confidential operations;
installation of electrical screens in rooms where technical equipment is located, as well as local electromagnetic screens for this equipment, including telephones;
use of active protection systems, such as spatial and linear noise suppression systems;
increasing the time for solving open problems on computers;
use of fiber optic systems as communication lines.
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Protection from visual observation and photography
selection of the optimal location of workstations and equipment: workstations, computer screens and other devices containing confidential information should be placed in such a way as to exclude direct or remote observation by outsiders;
window protection and directions: windows of the premises should face controlled areas;
use of specialized materials: blackout glass, curtains and other protective materials can help prevent surveillance and photography;
Screen blanking: Using tools that allow screens to blank after a certain period of operation can reduce the risk of information leakage.
Protection from visual observation and photography
Protection from eavesdropping
periodic visual or X-ray inspections of premises to detect illegally installed microphones and other devices and to detect radio signals emitted by eavesdropping devices;
the use of materials and devices that help absorb sound, such as sound-absorbing cladding, special door vestibules, double-glazed windows;
the use of means to create noise in rooms in order to make eavesdropping difficult (sound generators, noise masking and other technical solutions);
closing potential channels through which eavesdropping or information leakage could occur, such as ventilation ducts and wire holes;
creation of special premises that eliminate the possibility of information leakage through technical devices;
laying cables in protected channels and using shielded power lines to protect against interception of electromagnetic signals;
prohibition of parallel communication lines;
the use of devices that create radio interference to make eavesdropping difficult;
use of special technical means of protecting telephone conversations;
use of scramblers on communication lines;
use of shielded telephones for negotiations;
prohibition of the transmission of information requiring protection through telephones without installed scramblers;
constant monitoring of all telephone communications.
Neutralization of the acoustic channel of information leakage is achieved:
using electronic stethoscopes to assess the situation and receive recommendations for additional protective measures;
creating additional noise with acoustic generators, which can make it difficult to listen, but this is effective mainly on windows and ventilation shafts;
using special devices to detect working dictaphones;
by placing ribbed glass in a frame at a certain angle.
The methods of protection against directional microphones are as follows:
All business negotiations should be conducted in rooms that are completely isolated from neighboring rooms, with closed doors and windows with thick curtains;
important conversations should be avoided on the street, in parks and other open places;
If it is necessary to conduct negotiations in an open space, do so while moving to make it difficult to eavesdrop;
Strong background noise, such as the sound of a passing train or road noise, can make it difficult to use shotgun microphones for listening.