field noteshttps://personanotes.comShort notes and write-ups on security topics.The TLS 1.3 handshake in one pagehttps://personanotes.com/notes/tls-handshakehttps://personanotes.com/notes/tls-handshakeMon, 05 Oct 2026 00:00:00 +0000TLS 1.3 cut the handshake to a single round trip and dropped every legacy cipher that caused trouble. These are the parts worth remembering.A threat model that fits on an index cardhttps://personanotes.com/notes/threat-model-notehttps://personanotes.com/notes/threat-model-noteMon, 28 Sep 2026 00:00:00 +0000Four questions from Shostack's framework, kept short enough that a team will actually answer them before shipping.