http://r2km7u25qebaefa7b6jdcjldymc2u337vzpx7ne773ypgs3qlq4xycqd.onion/index.php?page=PRIMER
Among the code, I found an interesting comment that provided a key hint: /*"Someone didn't bother reading my carefully prepared memo on commonly-used passwords.
Now, then, as I so meticulously pointed out, the four most-used passwords are:
love, sex, secret, and..." - The Plague*/ This is a quote from the movie "Hackers", and the missing word is "GOD".