Do we know the code behind these vulnerabilities were written by AI? It seems like if anything AI was used to find exisitng vulnerabilities that would otherwise be used/sold as zero days and go unreported.

It was always the case that finding vulnerabilities in software was easier than writting perfect software. I'm hopeful that we can use AI to make software more secure over time. Project Zero [1] and others has shown many times the past few years (pre LLMs) that automated fuzzing and other forms of dynamic analysis are very effective, which bodes well for automated testing via LLMs!

I agree that more code = more bugs overeall, but there are slow moving codebases that run some of the worlds most valuable software. Seems like using AI to find vulnerabilities in that code is a huge win across the board.

[1]: https://www.google.com/search?q=site%3Aprojectzero.google&q=...