Notices by Matthew Green (matthew_d_green@ioc.exchange)

Meredith Whittaker on the security and privacy risks of Ai agents in messaging platforms, which I also worry about a lot. https://techcrunch.com/2025/03/07/signal-president-meredith-whittaker-calls-out-agentic-ai-as-having-profound-security-and-privacy-issues/

Somebody asked whether dictionary-word passphrases (“correct horse battery staple”, like the ones generated by 1Password) are any good. Short answer: good means different things. Shorter answer: yes!

I’ll talk about why in a thread below.

Hope this ends up being like infosec Twitter used to be a few years ago. Thanks to Elon Musk for giving me the push to give it a try.