Bootstrapping HTTP/1.1, HTTP/2, and HTTP/3
Guest Post: A packet-level tour through redirects, TLS negotiation, and protocol discovery.
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Jan Schaumann is a Distinguished Infrastructure Security Architect, Adjunct Professor of Computer Science, and Actual Human at "The Internet" with more than 20 years of experience building and securing high-availability services at Internet scale. His broad interests include all areas of information security and the overall health of the internet, as well as the safety and privacy of its users.
By Jan Schaumann on 2 Jul 2025
Guest Post: A packet-level tour through redirects, TLS negotiation, and protocol discovery.
By Jan Schaumann on 19 Jul 2024
Guest Post: A look at centralization in the ownership of IP blocks.
By Jan Schaumann on 18 Dec 2023
Guest Post: Measuring HTTPS resource record adoption in the wild.
By Jan Schaumann on 1 Aug 2023
Guest Post: A look at centralization in naked domains.
By Jan Schaumann on 28 Jun 2023
Guest Post: How Certification Authority Authorization is used globally.
By Jan Schaumann on 5 Apr 2023
Guest Post: Analysing gTLD MX records for centrality.
By Jan Schaumann on 13 Jan 2023
Guest Post: Measuring the diversity of authoritative NS records in gTLDs.