It feels like not a week goes by without someone sending me yet another credential stuffing list. It's usually something to the effect of "hey, have you seen the Spotify breach", to which I politely reply with a link to my old No, Spotify Wasn't Hacked blog post (it's just the output of a small set of credentials successfully tested against their service), and we all move on. Occasionally though, the corpus of data is of much greater significance, most notably the Collection #1 incident of early...