Hilton is quick to say that it eliminated the rogue code, and it's offering a year's worth of free credit monitoring if you're nervous. With that said, this is a story we've heard all too often: it's a belated warning (about two months after a third-party discovery) for data breaches that could have been devastating far earlier. While there's no guarantee that Hilton could have stopped the intrusions in the first place, it would have ideally notified travelers the moment it realized that something was wrong.

[Image credit: AP Photo/Mark Lennihan]