The FBI and other agencies are using polygraphs to find leakers. But do they work?

Federal agencies are employing polygraphs to investigate potential information leaks. The FBI confirmed using these devices after Tuesday's announcement. DHS Secretary Tricia McLaughlin supports the use, ensuring accountability through prosecution. While polygraphs can detect stress or potential deception, they're not foolproof. Experts like Thomas Mauriello and Alan Saquella acknowledge their utility but caution against overuse to avoid resource strain and morale issues.