If you've read any of Bruce Schneier's books on computer security, you've read security scenarios featuring the character of Alice, who wants to send a message to Bob (Schneier borrowed these characters from Ron Rivest's security scenarios). Some of these examples use the character of Eve — as in “eavesdropper” — who wants to know the content of Alice's messages to Bob.
The “Alice and Bob” stories have become the source material for a number of stories, speeches, jokes and even songs [MP3 link] in the geek world, the latest of which is this comic in which Eve tells her side of the story. The technology may be new, but the backstory is one of the oldest in the world:
Click the picture to read the full comic.