The utility model provides an
electromagnetic shielding device based on physical isolation, which comprises a shielding box, a first shielding net is arranged on the outer side surface of the shielding box, a plurality of supporting legs are arranged at the bottom of the shielding box, a lifting platform is arranged in the shielding box, and the lifting platform comprises transmission assemblies symmetrically arranged on the front side and the rear side of the inner side wall of the shielding box. A placing table is movably arranged between the two transmission assemblies, an opening part communicated with the lifting platform is formed in the top of the shielding box, a movable groove is formed in the side wall of the opening part from the rear side to the front side, a winding
assembly is arranged on the side, close to the opening part, of the rear side of the shielding box, and the winding
assembly moves in the movable groove. A
microcontroller is arranged on the inner side wall of the shielding box, the
microcontroller is electrically connected with the transmission
assembly and the winding assembly, the
microcontroller is connected with the upper
control unit through a wire, and the problem that existing
network security depends on a
virtual firewall and cannot cope with the continuously iterative
hacker technology is solved.