Increased false positive rates being observed

Hey y’all!

As of yesterday, I have been seeing a incredibly high false positive rate (blocking 100% of legitimate users in my testing). Specifically, this is impacting my iOS Web Views, which have a custom user agent string. This is not impacting my Android Web Views, which similarly have the custom user agent string, but also have the new sec-ch-ua* headers.

I was wondering if there was a change to the reCAPTCHA model recently that would have caused a heavier weight to non-standard user agent strings. And if so, is that something that was intentional / what guidance would you give to remedy this.

We are working on removing the custom user agent string, but that will require users to download the new version of the app to remedy the situation.

Any insight,  guidance, or workaround would be greatly appreciated (outside of just disabling CAPTCHA for the time being).

Thanks!