I wonder why the sudden influx? Is it as simple as a bunch of researchers stuck inside on quarantine? Or is there some underlying architectural flaw that's been discovered recently and riffed on? Any insight this community has would be interesting to me.

I have a few guesses:

1. iOS 13.5 beta releases have had security fixes that haven't still reached a stable release. See [1] for eg.

2. The Apple iPhones for security researchers program[0] actually led to more security issues being found?

[0]: https://www.theverge.com/2019/8/8/20756629/apple-iphone-secu...

[1]: https://siguza.github.io/psychicpaper/