System, apparatus and method for encryption and decryption of data transmitted over a network

A method comprising:

• receiving input text at an intermediate module from a client device;
• processing said input text at the intermediate module to obtain processed text, wherein said processing comprises including a bait in said processed text;
• transmitting the processed text to the server, wherein the server is adapted to transform text received from the client device by applying at least one of a plurality of transformations;
• upon request, receiving at said intermediate module transformed processed text from the server, said server having applied at least one of said plurality of transformations to said processed text to obtain said transformed processed text;
• and
• determining by said intermediate module at least one of said transformations applied by said server based on a comparison between the bait in the processed text and the bait in the transformed processed text.