2025-08-01 I joined the University of Tennessee at Chattanooga as a tenure-track Assistant Professor in Computer Science and Engineering. 2021-04-05 The Record covered our hCaptcha study; it was also discussed on Slashdot and Hacker News. 2019-09-04 Our work on breaking Google’s image reCAPTCHA v2 was covered by The Register and Reclaim The Net.