The “mole” was the unusually lax security procedures followed by Secretary of State Hillary Rodham Clinton, whose unauthorized home server was hacked early and often by the Chicoms, among others. Add to that a failure by Huma Abedin to properly safeguard her portable laptop while in China, a lapse which may have provided a good many clues to the Chicoms as to where to look for possible networks, and the distinct possibility that these “lapses” were in exchange for some personal gain.
I would bet money that none of these were lapses. My guess is that when laundered chinese money was deposited at the Clinton foundation that a desired bit of classified info then appeared on one or more of the Clinton devices.
Everything they ever did had a money angle to it.