Oh, come on -- don't cheat!<p>Though I admit I don't currently have the time to get far (I've gotten the first couple but have work to do tonight...). I love these puzzles, though!<p>I quite enjoyed going through the web penetration puzzle posted here a year or so ago -- where to access the next URL at each step involved a slightly trickier exploit (starting at just reading the HTML source, to modifying form fields, to tweaking cookies, etc.) -- anyone remember where this was?<p>It was educational (as well as fun), so at least I could excuse burning some time doing it.