affinity fraud
n.— «When the scoundrel running the fraud is a trusted person, it makes the crime even more repulsive. Affinity fraud, as it is known, often includes people who put themselves in positions of trust at churches or schools, in social and civic organizations and other environments, only to financially abuse the relationships.» —“Learn from the college of deception” by George Chamberlin North County Times (Escondido, California) Apr. 15, 2007. (source: Double-Tongued Dictionary)
Further reading
Understanding the varieties of conversational styles can mean the difference between feeling you’re understood and being insulted. “High-involvement” speakers interrupt or talk along with someone else to signal their enthusiasm...
Books were rare treasures in the Middle Ages, painstakingly copied out by hand. So how to protect them from theft? Scribes sometimes added a curse to the first page of those books that was supposed to keep thieves away — and some were as vicious as...