Cybersecurity – Put to the test (IMAGE) DOE/Oak Ridge National Laboratory Caption The D2U model categorizes user data by capturing behavior in all open programs throughout a user’s day. Credit Nathan Armistead/ORNL, U.S. Dept. of Energy Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.