A friend of mine was trying to sign into their T-Mobile account to pay their bill when they saw this strange message.
Welcome, first and last_name
Method Not Allowed The requested method POST is not allowed for the URL /apps/mytmobile/components/content/common/billing/balancedue. Apache/2.2.15 (Red Hat) Server at my.t-mobile.com Port 443
I don't think anyone needs to know what web server T-Mobile is using, nor what Linux distribution or port number. That would give a hacker a chance to try to log in.
I tried calling T-Mobile myself, but wasn't able to get a hold of anyone to report this problem.