Could be many folks right here on FR. All of us are more or less computer literate. Many have greivances against the government, some are probably loaners, to one degree or antoher. Personally I think it's not a native born Amercian, but someone trying real hard appear like one trying not appear to be one. Although it might be someone born in American to foreign born parents and raised in an "enclave" (ghetto, barrio, etc depending on nationality/ethnicity). Plenty of those which are composed of Arab Muslims or Middle East/Southwest Asian Muslims. Especially around the New York / northeast New Jersey area, as well as Los Angles. Smaller pockets in other places.
The FBI's take on this seems just plain stupid to me. Their analysis is juvenile. A foreigner trying to sound like an American trying to sound like a foreigner but really it's a right-wing Christian extremist.
"When in danger, when in doubt, run in circles, scream and shout."
I'd like to know why it's white right-wing Christian extremists who are suspected more than those who are actually doing the screaming and shouting: black left-wing Muslims.
Ooops, sorry. I forgot. The shrieking anti-American Left are never terrorists, and none would ever fit this profile. Sorry, sorry, forget I said anything.