Paper Q&A How to ALPN/SNI Updates! News A big reevaluation of TLS libraries, TLS application servers, and a new internet scan by Jannik Hölling is now available in the Updates section! ALPACA will be presented at Black Hat USA 2021, USENIX Security Symposium 2021, and Real Word Crypto Symposium 2022! Recommended articles: Ars Technica (Dan Goodin), Golem (Hanno Böck; German) Introduction TLS is an