Encryption software is a technology that uses cryptographic algorithms to convert plain text or data into ciphertext, rendering it unintelligible to unauthorized individuals. The encryption process ...

Last May, German investigators found secret files embedded in a pornographic video on memory cards being carried by a suspected al Qaeda operative. Peter Wayner describes the history and technology of ...

Reports that the NSA has developed mechanisms for reading data encrypted with many of today’s standard encryption mechanisms raise the question: Is there any way to send a message across the Internet ...

The practice of messages in the data underlying an image is called steganography. Steganographic encryption works by adding a small pattern as a layer over an image. Sometimes the pattern is invisible ...