Emerging Technologies for Authorization and Authentication

1. Front Matter

   Pages i-viii

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2. WYK: Mobile Device Authentication Using the User’s Address Book

   • Mehari Msgna, Sokratis Katsikas, Vasileios Gkioulos

   Pages 1-16

3. Future-Proof Web Authentication: Bring Your Own FIDO2 Extensions

   • Florentin Putz, Steffen Schön, Matthias Hollick

   Pages 17-32

4. Heartbeat-Based Authentication on Smartwatches in Various Usage Contexts

   • Dmytro Progonov, Oleksandra Sokol

   Pages 33-49

5. Quantum Multi-factor Authentication

   • Hazel Murray, David Malone

   Pages 50-67

6. An Interface Between Legacy and Modern Mobile Devices for Digital Identity

   • Vasilios Mavroudis, Chris Hicks, Jon Crowcroft

   Pages 68-76

7. Facial Recognition for Remote Electronic Voting – Missing Piece of the Puzzle or Yet Another Liability?

   • Sven Heiberg, Kristjan Krips, Jan Willemson, Priit Vinkel

   Pages 77-93

8. Integrating a Pentesting Tool for IdM Protocols in a Continuous Delivery Pipeline

   • Andrea Bisegna, Roberto Carbone, Silvio Ranise

   Pages 94-110

9. Mimicry Attacks Against Behavioural-Based User Authentication for Human-Robot Interaction

   • Shurook S. Almohamade, John A. Clark, James Law

   Pages 111-126

10. Private Data Harvesting on Alexa Using Third-Party Skills

    • Jack Corbett, Erisa Karafili

    Pages 127-142

11. Handling Meta Attribute Information in Usage Control Policies (Short Paper)

    • Theo Dimitrakos, Tezcan Dilshener, Alexander Kravtsov, Antonio La Marra, Fabio Martinelli, Athanasios Rizos et al.

    Pages 143-151

12. “Ask App Not to Track”: The Effect of Opt-In Tracking Authorization on Mobile Privacy

    • Anzo DeGiulio, Hanoom Lee, Eleanor Birrell

    Pages 152-167

13. Back Matter

    Pages 169-169

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This book constitutes the proceedings of the 4^th International Workshop on Emerging Technologies for Authorization and Authentication, ETAA 2021, held in Darmstadt, Germany, on October 8, 2021. The workshop was co-located with ESORICS 2021.
The 11 full papers presented in this volume were carefully reviewed and selected from 14 submissions. The workshop presents new techniques for biometric and behavioral based authentication, authentication and authorization in the IoT and in distributed systems in general, including smart home environment.

• access control
• authentication
• biometrics
• communication systems
• computer hardware
• computer networks
• computer science
• computer security
• computer systems
• cryptography
• data security
• engineering
• Human-Computer Interaction (HCI)
• internet
• network protocols
• network security
• privacy
• sensors
• signal processing
• telecommunication systems

• Consiglio Nazionale delle Ricerche, Pisa, Italy

  Andrea Saracino

• Institute of Informatics and Telematics, Pisa, Italy

  Paolo Mori

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