David Knichel, PhD

Notes & ideas

Blog

Technical articles on AI, security, and the ideas behind useful systems.

AI · Security

Technical foundations of agentic security

How untrusted content can influence an agent’s actions, and how trust boundaries, permissions, and runtime checks can limit the consequences.

AI · Technical notes

Technical foundations of text watermarking

How SynthID-Text creates a statistical signal through token selection, and how a detector distinguishes that signal from chance.