Cool to see our work here. I'm Thai, and I run Calif. Happy to answer any questions.

We'll publish the technical details of these hacks over the coming weeks. Writing these articles takes time, and we've been busy with a PHP thing [1].

In the meantime, check out The Great Glyph Grift [2] for a glimpse of what can go wrong when iOS parses PDFs.

Just in case you wonder, we've disclosed most of the bugs in these exploit chains to Apple and will disclose the rest. So far in 2026, we've reported close to 100 bugs to Apple. We don't accept Apple bounties, and we're not being paid for this work. We don't sell bugs or exploits, and we have no sponsors funding this research.

We do this because it's fun, intellectually challenging, and we want to help make the iPhone safer. We also have a business to run, so we do need some marketing points.

[1] https://calif.io/php2shell

[2] https://calif.io/research/the-great-glyph-grift

I saw your keynote at BSides a few weeks ago and it blew my mind and it looks like it was just the beginning!

Why not accept the Apple bounties and donate it or something?

Hey Thai- How much of the at Calif is managing agents to explore ideas? Are ideas coming from agents themselves or still human generated, and has that changed since y'all started the company?

On the cost side- How expensive is it to develop each of these demos w.r.t. inference cost? Are y'all purely using OAI/A\ cyber models or are there OSS models being used too?

Big fan!