Rachna Dhamija

Publications
Influence

Rachna Dhamija, J. Tygar, Marti A. Hearst
Computer Science
CHI
22 April 2006

To build systems shielding users from fraudulent (or phishing) websites, designers need to know which attack strategies work and why. Expand

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Deja Vu-A User Study: Using Images for Authentication

Rachna Dhamija, A. Perrig
Computer Science
USENIX Security Symposium
14 August 2000

We address a fundamental weakness of knowledge-based authentication schemes and propose Deja Vu, which authenticates a user through her ability to recognize previously seen images. Expand

The battle against phishing: Dynamic Security Skins

Rachna Dhamija, J. Tygar
Computer Science, Engineering
SOUPS '05
6 July 2005

We propose a new scheme, Dynamic Security Skins, that allows a remote web server to prove its identity in a way that is easy for a human user to verify and hard for an attacker to spoof. Expand

The Emperor's New Security Indicators

S. Schechter, Rachna Dhamija, A. Ozment, Ian S. Fischer
Computer Science
IEEE Symposium on Security and Privacy (SP '07)
20 May 2007

We present the first empirical investigation of site-authentication images, and we find them to be ineffective: even when we removed them, 23 of the 25 (92%) participants who used their own accounts entered their passwords. Expand

The Seven Flaws of Identity Management: Usability and Security Challenges

Rachna Dhamija, Lisa Dusseault
Computer Science
IEEE Security & Privacy
1 March 2008

Identity management systems let users leverage one identifier across multiple Web services by separating the role of and IdP from the RP. Expand

Use Your Illusion: secure authentication usable anywhere

E. Hayashi, Rachna Dhamija, N. Christin, A. Perrig
Computer Science
SOUPS '08
23 July 2008

We propose Use Your Illusion, a novel mechanism for user authentication that is secure and usable regardless of the size of the device on which it is used. Expand

Stopping spyware at the gate: a user study of privacy, notice and spyware

N. Good, Rachna Dhamija, +4 authors J. Konstan
Computer Science, Business
SOUPS '05
6 July 2005

We discovered that regardless of the bundled content, users will often install an application if they believe the utility is high enough. Expand

Animated exploration of dynamic graphs with radial layout

K. Yee, Danyel Fisher, Rachna Dhamija, Marti A. Hearst
Computer Science
IEEE Symposium on Information Visualization…
22 October 2001

We describe a new animation technique for supporting interactive exploration of a graph. Expand

The Emperor's New Security Indicators An evaluation of website authentication and the effect of role playing on usability studies †

S. Schechter, Rachna Dhamija, A. Ozment, I. Fischer
Engineering
1 May 2007

We evaluate website authentication measures that are designed to protect users from man-in-the-middle, ‘phishing’, and other site forgery attacks. We asked 67 bank customers to conduct common online… Expand

Hash visualization in user authentication

Rachna Dhamija
Computer Science
CHI Extended Abstracts
1 April 2000

In this paper, we have investigated how the usability and security of user authentication systems can be improved by replacing text strings with structured images. Expand

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