Yesterday my father called me and asked if I'd have a look at his website to exchange his logo with a new one and make some string changes in the backend. Well, of course I did and hell am I glad I did it.
He had that page made a few years ago by some cousin of a friend who "is really good with computers", it's a small web shop for car parts and, as usual costumer accounts. Costumer Accounts with payment infos.
Now I've seen a lot of bad practices when it comes to handling passwords and I've surely done a few questionable things myself but this idiot took the cake. When a new account was registered his php script would read the login page, look for a specific comment and add a string "'account; password'," below into to a js array. In clear text. On the website. One doesn't even have to breach the db, it's just there, F12 and you got all the log ins.

Seriously, we really need a licensing system for devs, those were two or three years this shit was live, 53 accounts... Now I've gotta decipher this entire bowl of spaghetti just to see if he has done any more unspeakable things.