According to tech news site Neowin, an anonymous user posted usernames and passwords for over 10,000 Windows Live Hotmail accounts to web site PasteBin, including accounts on email domains like @hotmail.com, @msn.com, and @live.com. Neowin verified that the accounts are genuine, and that most appear to be based in Europe. Ars Technica reports, more specifically, those leaked accounts include usernames in alphabetical order beginning with the letters "ar" to "bl". Microsoft has confirmed the leak, so if you're a Live Hotmail user and you suspect you may have been affected, now's the time to change that password. For the rest of us—well, this may serve as a reminder that it might be a good time to do a password refresh, anyway.