this post was submitted on 18 Jun 2023
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Unfortunately lemmy devs removed captchas recently https://github.com/LemmyNet/lemmy/issues/2922 so email verification and/or rate limiting is probably the only real option for protection.
With tools like this (https://nopecha.com/) existing they might be right. This is not even the only tool, it really looks like captchas are no longer useful because of AI.
It might be broken, but it's also a matter of setting up enough of an obstacle for bot operators. By having a captcha, it limits them to using software that has the ability to break a captcha, and that might be enough trouble that they go elsewhere to easier targets, as opposed to having no captcha, and letting them run wild with anything that they already have.
Even tools like that have rate limits and things that would be just as much of a small obstacle.
That’s a major bad call. Companies like Google who maintain Captcha know the state of AI and will update captcha continuously to adapt.