Quick caveats: this is a post on AI safety, written by a cryptography professor. If that troubles you, you should read something else. I try hard not to work on AI (except when the topic occasional…

I’m coming down from spending a few days at Usenix Security, right here in my hometown of Baltimore. This means that my days have been taken up with two kinds of conversation: first, explaini…

Encrypted chain-of-thought blocks returned by Anthropic, OpenAI and Google APIs are interchangeable across sessions, users and models. We exploit this to decode hidden reasoning at scale.

OpenAI shares new results on long-standing open problems in mathematics and theoretical computer science, including advances in geometry, cryptography, and complexity.

The University and Its Purpose: A Declaration of First Principles was adopted by the Vanderbilt University Board of Trust in June 2026. The declaration is organized around three core purposes: Pathbre...

Yesterday Anthropic published two new cryptanalysis results, both outputs of Claude Mythos, their (still) unreleased advanced model. The first of these results attacks a signature scheme called HAW…

This case involves Apple’s handling of user-uploaded files hosted in private iCloud storage. Instead of adopting PhotoDNA to scan hosted files for CSAM, Apple created its own proprietary alternative, ...