All of us, have our antenna up for people who might harm us in one way or another, not just people who might hurt us physically, but also for people who might treat us unfairly, take advantage of us, cheat us or fail to do their share. And we react very strongly to be misleading by other people, is part of human nature, to guard against being hurt and exploited.
Mark Leary, Understanding the Mysteries of Human Behavior
cheat, exploit, human-behaviour, hurt