The US Department of Defense is investing in deepfake detection

MIT Technology Review 

"This work represents a significant step forward in strengthening our information advantage as we combat sophisticated disinformation campaigns and synthetic-media threats," says Bustamante. Hive was chosen out of a pool of 36 companies to test its deepfake detection and attribution technology with the DOD. The contract could enable the department to detect and counter AI deception at scale. "This is the evolution of cyberwarfare." Hive's technology has been trained on a large amount of content, some AI-generated and some not.