1. A scripting engine to cause a computer processor to perform operations, the scripting engine comprising: a first script interpreter that causes the computer processor to interpret a carrier script that is presented in the clear to generate a first sequence of instructions that are executed by the computer processor to carry out the directives of the carrier script; a first steganographic decoder that causes the computer processor to extract a hidden script that is steganographically coded in the carrier script, the hidden script being different from the carrier script; and a second script interpreter that causes the computer processor to interpret the hidden script to generate a second sequence of instructions that are executed by the computer processor to carry out the directives of the hidden script.