Marcus Ranum: The Six Dumbest Ideas in Computer Security

This is an article that is now over twenty years old.

And yet posting it seems like a worthwhile refresher for the "Agentic Age" .... because very basic principles are being thrown overboard.

One is: There has to be a clear separation between code that controls actions on your computer, and untrusted data.

Looking at agentic systems - what do you see?