Apparatus and method for preventing information leakage

An apparatus for preventing an information leakage, comprising:

• a shielding signal pattern generation unit configured to generate a shielding signal pattern including a radiation band and a radiation suppression band;
• a shielding signal generation unit configured to generate an electromagnetic leakage shielding signal corresponding to an Orthogonal Frequency Division Multiplexing (OFDM) scheme by using the shielding signal pattern;
• a signal amplification unit configured to amplify a transmitting power of the electromagnetic leakage shielding signal;
• and
• an antenna unit configured to transmit the amplified electromagnetic leakage shielding signal,
• wherein the shielding signal pattern generation unit generates the shielding signal pattern of a sample rate band including an operating frequency band, a guard frequency band, and an image frequency band.