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University of Ontario Institute of Technology

1. Addas, Alaadin. Systems and models for secure fallback authentication.

Degree: 2018, University of Ontario Institute of Technology

Fallback authentication (FA) techniques such as security questions, Email resets, and SMS resets have significant security flaws that easily undermine the primary method of authentication. Security questions have been shown to be often guessable. Email resets assume a secure channel of communication and pose the threat of the avalanche effect; where one compromised email account can compromise a series of other accounts. SMS resets also assume a secure channel of communication and are vulnerable to attacks on telecommunications protocols. Additionally, all of these FA techniques are vulnerable to the known adversary. The known adversary is any individual with elevated knowledge of a potential victim, or elevated access to a potential victim's devices that uses these privileges with malicious intent, undermining the most commonly used FA techniques. An authentication system is only as strong as its weakest link; in many cases this is the FA technique used. As a result of that, we explore one new and one altered FA system: GeoPassHints a geographic authentication system paired with a secret note, as well as GeoSQ, an autobiographical authentication scheme that relies on location data to generate questions. We also propose three models to quantify the known adversary in order to establish an improved measurement tool for security research. We test GeoSQ and GeoPassHints for usability, security, and deployability through a user study with paired participants (n=34). We also evaluate the models for the purpose of measuring vulnerabilities to the known adversary by correlating the scores obtained in each model to the successful guesses that our participant pairs made. Advisors/Committee Members: Thorpe, Julie.

Subjects/Keywords: Geographic authentication; Fallback authentication; Autobiographical authentication; Known adversary

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Addas, A. (2018). Systems and models for secure fallback authentication. (Thesis). University of Ontario Institute of Technology. Retrieved from http://hdl.handle.net/10155/1004

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Addas, Alaadin. “Systems and models for secure fallback authentication.” 2018. Thesis, University of Ontario Institute of Technology. Accessed October 19, 2019. http://hdl.handle.net/10155/1004.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Addas, Alaadin. “Systems and models for secure fallback authentication.” 2018. Web. 19 Oct 2019.

Vancouver:

Addas A. Systems and models for secure fallback authentication. [Internet] [Thesis]. University of Ontario Institute of Technology; 2018. [cited 2019 Oct 19]. Available from: http://hdl.handle.net/10155/1004.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Addas A. Systems and models for secure fallback authentication. [Thesis]. University of Ontario Institute of Technology; 2018. Available from: http://hdl.handle.net/10155/1004

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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