So-called security.
<Discovering without any surprise that my nine-year-old username and password were still valid, still granting me admin rights that I had no rights to any more,...>
Reminds me of a few years ago when I want back to a well-known bank which I had last done some work for about 4 years previously. Logged straight in with my old username and password, admin rights... The thing that surprised me was that the 3 or 4 IT admin guys watching me didn't say a word!