Emily Marx, Timothy Le
Original paper: Zakir Durumeric, James Kasten, Michael Bailey, and J Alex Halderman. 2013. Analysis of the HTTPS certificate ecosystem. In Proceedings of the 2013 conference on Internet measurement conference. ACM, 291–304.
We aimed to reproduce “Analysis of the HTTPS Certificate Environment”  by Durumeric et al. At the time of this paper (2013), the authors produced the most comprehensive existing dataset of the HTTPS environment, with the aim of better understanding certificate authorities and leaf certificates. We found this paper interesting to reproduce because the scans were performed in 2013. In our 2019 scan, we explore changes in the certificate landscape over the past five years.