Three-Way Dissection of a Game-CAPTCHA: Automated Attacks, Relay Attacks, and Usability. - Manar Mohamed; Niharika Sachdeva; Michael Georgescu; Song Gao 010; Nitesh Saxena; Chengcui Zhang; Ponnurangam Kumaraguru; Paul C. van Oorschot; Wei-bang Chen (CoRR, 2013)

A three-way investigation of a game-CAPTCHA: automated attacks, relay attacks and usability. - Manar Mohamed; Niharika Sachdeva; Michael Georgescu; Song Gao 010; Nitesh Saxena; Chengcui Zhang; Ponnurangam Kumaraguru; Paul C. van Oorschot; Wei-bang Chen (AsiaCCS, 2014)

Gaming the game: Defeating a game captcha with efficient and robust hybrid attacks. - Song Gao 010; Manar Mohamed; Nitesh Saxena; Chengcui Zhang (ICME, 2014)

Emerging Image Game CAPTCHAs for Resisting Automated and Human-Solver Relay Attacks. - Song Gao 010; Manar Mohamed; Nitesh Saxena; Chengcui Zhang (ACSAC, 2015)

Curbing mobile malware based on user-transparent hand movements. - Babins Shrestha; Manar Mohamed; Anders Borg; Nitesh Saxena; Sandeep Tamrakar (PerCom, 2015)

Gametrics: towards attack-resilient behavioral authentication with simple cognitive games. - Manar Mohamed; Nitesh Saxena (ACSAC, 2016)

Theft-resilient mobile wallets: transparently authenticating NFC users with tapping gesture biometrics. - Babins Shrestha; Manar Mohamed; Sandeep Tamrakar; Nitesh Saxena (ACSAC, 2016)

SMASheD: Sniffing and Manipulating Android Sensor Data. - Manar Mohamed; Babins Shrestha; Nitesh Saxena (CODASPY, 2016)

Slogger: Smashing Motion-based Touchstroke Logging with Transparent System Noise. - Prakash Shrestha; Manar Mohamed; Nitesh Saxena (WISEC, 2016)

Walk-Unlock: Zero-Interaction Authentication Protected with Multi-Modal Gait Biometrics. - Babins Shrestha; Manar Mohamed; Nitesh Saxena (CoRR, 2016)

On the security and usability of dynamic cognitive game CAPTCHAs. - Manar Mohamed; Song Gao 010; Niharika Sachdeva; Nitesh Saxena; Chengcui Zhang; Ponnurangam Kumaraguru; Paul C. van Oorschot (J. Comput. Secur., 2017)

SMASheD: Sniffing and Manipulating Android Sensor Data for Offensive Purposes. - Manar Mohamed; Babins Shrestha; Nitesh Saxena (IEEE Trans. Inf. Forensics Secur., 2017)

Challenge-response behavioral mobile authentication: a comparative study of graphical patterns and cognitive games. - Manar Mohamed; Prakash Shrestha; Nitesh Saxena (ACSAC, 2019)

ZEMFA: Zero-Effort Multi-Factor Authentication based on Multi-Modal Gait Biometrics. - Babins Shrestha; Manar Mohamed; Nitesh Saxena (PST, 2019)

Emerging-Image Motion CAPTCHAs: Vulnerabilities of Existing Designs, and Countermeasures. - Song Gao 010; Manar Mohamed; Nitesh Saxena; Chengcui Zhang (IEEE Trans. Dependable Secur. Comput., 2019)

Voicefox: Leveraging Inbuilt Transcription to Enhance the Security of Machine-Human Speaker Verification against Voice Synthesis Attacks. - Maliheh Shirvanian; Manar Mohamed; Nitesh Saxena; S. Abhishek Anand (ACSAC, 2020)