Here is how I knew: MFC has a "security log" that shows the IP, time, and region in which someone logged on from. I have my home IP which is a secure network, my phone logged in through my Universities network (which I wrongly believed to be secure), and another log in from my phone using 4G.
All of these log ins occur at times I remember and in my State. However, yesterday I noticed to log-ins from a different state with completely different IP's than any of mine. One of which occurred at a time that I am positive I didn't log on as I was rushing to catch my bus to get to class.
My first thought is it was someone in the tech helpdesk at the college. Except for the main manager of the department, most of the employees there are college students. When you connect to any computer, wired or wireless, on campus they have the right to track everything you do. Download some torrent movie, they know about it. They may not enforce it all the time, but they know. That's why I always used a VPN on my laptops and tablets while on campus, so they wouldn't know.
That said they would naturally have the software installed to see exactly what you were signing on to, and as pointed out, mfc is not a secured website. So they would see what info you were transferring as you signed in; username and password.
I doubt you can do anything about finding out which person did this now. Best thing you can do is change passwords on EVERY SINGLE THING you do online. Email, amazon, ebay, mfc, this site...every site you have entered a password in, change it now. And take this opportunity to get more paranoid. Install Keepass password manager, let it generate random and secure passwords for each site. A different one everywhere.
This is the important part. Go to
Annualcreditreport.com and request a free credit report now. You can get a free copy of your credit report every 12 months from each credit reporting company. So do one now, wait one month and request another from another reporting agency. Then in a few months do the third one. They will show any loans and credit cards you have, also any credit applications you applied for. If anything suspicious shows up you don't know about you will know it there first and can report it as fraud before anything builds up.