A scammer calls, and asks for a passcode. Malcolm, an elderly man with an English accent, is confused.“What’s this business you’re talking about?” Malcolm asks.Another day, another scam phone call.This time, Ibrahim, a cooperative and polite man with an Egyptian accent, picks up. “Frankly, I am not too sure I can recall buying anything recently,” he tells the hopeful con artist. “Maybe one of the kids did,” Ibrahim goes on, “but that’s not your fault, is it?” Sign up for a weekly email featuring...