Unwanted calls are annoying — but when a caller says they’re an FBI agent collecting on a legal judgment entered against you, it’s also scary. No matter how urgent and serious the call sounds, neither the judgment nor the agent are real. Like other impersonation scams, FBI imposters are after your money and personal information, and they might even threaten to arrest you unless you pay immediately. (Again: it’s not real.) Read on to learn to spot the scam.