A woman in Maryland discovered a coded message hidden within the pages of a secondhand book bought for her by her mother. Sydney, from Baltimore, had been eager to read La Belle Sauvage by Philip ...

Usually, a story about hacking a coded message will have some computer element or, at least, a machine like an Enigma. But [Ruth Selman] recently posted a challenge asking if anyone could decrypt an ...

When you think of wartime cryptography, you probably think of World War II and Enigma, although there were other famous codes used during that war. But in fact, there have been codes used through wars ...