Bulletproof TLS Newsletter 
Bulletproof TLS Newsletter is a free periodic newsletter bringing you commentary and news surrounding SSL/TLS and Internet PKI, designed to keep you informed about the latest developments in this space. Received monthly by more than 50,000 subscribers. Maintained by Hanno Böck.
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In memory of Peter Eckersley
29 Sep 2022
Peter Eckersley, a security researcher and longtime activist for the Electronic Frontier Foundation (EFF), passed away on September 2. Eckersley was most well-known for having cofounded the Let’s Encrypt certificate authority. Throughout his life, he worked on various projects to improve TLS security.
One of Eckersley’s earlier projects related to TLS security was the creation of the EFF SSL Observatory in 2010. With an internet-wide scan, the project collected all certificates reachable via public IPv4 addresses. Such internet-wide scans are a common tool of security research today. By analyzing this data, Eckersley was able to show that various certificate authorities violated existing rules for certificates. The dataset is still available and can be downloaded for analysis. A video of a presentation at the Chaos Communication Congress from Eckersley and Jesse Burns discussing the SSL Observatory is available online.
Eckersley later developed a proposal for an alternative to the TLS certificate authority system called Sovereign Keys, but it was never practically implemented.
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