
Now, when everyone is obsessed with encryption, cryptocontainers and other methods of fighting with “software attacks” such seemingly obsolete things like intrusion bugs are regarded as artifacts from James Bond movies rather than a real threat. As a consequence, a network that is physically isolated from the Internet is considered to be almost invulnerable to hackers. Even if the length of the network is many kilometers, and there are no security people to protect many of its components, which are literally accessible to anyone, sometimes just open to anyone, the network is still considered to be absolutely secure. Actually, it is not, as experience has shown.