Kieran Healy, a sociology professor at Duke University, wrote up an excellent, fictional, narrative version of how this could be done by examining information about memberships in various social clubs -- complete with privacy assurances.
Rest assured that we only collected metadata on these people, and no actual conversations were recorded or meetings transcribed. All I know is whether someone was a member of an organization or not. Surely this is but a small encroachment on the freedom of the Crown’s subjects.
By mapping individuals known to be involved in patriot-cause connected groups, you get this visual representation of the social connections:
And who is dead in the middle of this?
None other than Revere!
As Healy notes, this map wouldn't have told British intelligence anything about "his conversations, or his habits or beliefs, his writings (if he has any) or his personal life." But it would have surely made them give him a second look, and placed him near the top of their lists of suspected "terrorists."