Security, resilient payments and protocols.

Publications

• Resilient payment systems

  Doctoral thesis, University of Cambridge, 2018. DOI

• DigiTally: Piloting Offline Payments for Phones

  Thirteenth Symposium on Usable Privacy and Security, USENIX, 2017. PDFSlidesProject page

• Reconciling Multiple Objectives - Politics or Markets?

  International Workshop on Security Protocols XXV, 2017. PDFDiscussion

• SMAPs: Short Message Authentication Protocols

  Security Protocols XXIV, Lecture Notes in Computer Science 10368, 2016. PDFDiscussion

• Stressing Out: Bitcoin “Stress Testing”

  3rd Workshop on Bitcoin and Blockchain Research, 2016. PDFSlides

• Do You Believe in Tinker Bell? The Social Externalities of Trust

  International Workshop on Security Protocols XXIII, 2015. PDFDiscussion

Selected talks

• Mobile payments under poor network conditions

  Public lecture with Ross Anderson, Strathmore University, Nairobi, 2016. Slides

• DigiTally: offline payments

  Technology for the Bottom Billion Workshop, Cambridge, 2016. Slides

• Cryptocurrencies: challenges and caveats

  Alan Turing Institute workshop on the digital economy, British Library, London, 2015. Slides