I believe the other moles name is Joseph Misfud. Its in the notables of a bread from yesterday morning. I dug up Haller and misfuds names.
A few different reliable sauces fingered both of them. I had sauce for the notable. Just duckduckgo Joseph Misfud FBI mole, and you'll see he has already been fingered. Not saying their the only two, but their definitely at least two of them.
By the way, Misfud has dual US/UK citizenship. Wish I had the sauce on hand that I posted(that's in the notables). Had a ton of good info.
Good question, anon. Probably going to require some diggjn.
Nice find, anon.
At the very least Joseph Misfud and Halper. Could have been more moles as well though.
Telling them the truth?
There are many more reputable sauces confirming Misfud, but here is one:
http://thefederalist.com/2018/05/15/maltese-professor-may-hold-key-fbi-really-began-surveiling-trump/
If you want more sauce, duckduckgo, Misfud FBI mole.