Shujun Li

27 Seguidores

8 SlideShares 27 Seguidores 18 Siguiendos

cyber security usability password user authentication information security human factors biometrics security research digital watermarking signal processing multimedia captcha phd attack collaboration government university policy user compression discrete optimization dct video coding transform coding encryption image coding algorithm cryptanalysis image processing linear programming image forensics video copyright identify authentication automation machine learning performance evaluation man-in-the-middle attacks card skimmers shoulder surfers observation attack keyloggers human behaviour hidden cameras malware

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Shujun Li

Presentaciones

Observer-Resistant Password Systems:How hard to make them both usable and secure?

From Captchas to Captchæckers: Can we automate usability and security evaluation of CAPTCHAs?

Usable Security: When Security Meets Usability

From Digital Watermarking to Multimedia Forensics: How can they help to detect lost identities in multimedia work?

When Discrete Optimization Meets Multimedia Security (and Beyond)

Human/User-Centric Security

Human Factors in Cyber Security: User authentication as a use case

When will passwords die? Research challenges and opportunities in user authentication