Abuse isn’t just about inducing CPU or network traffic load (in fact I doubt that was even considered when CAPTCHA was first invented). It’s spam, fraud, that k

Abuse isn’t just about inducing CPU or network traffic load (in fact I doubt that was even considered when CAPTCHA was first invented). It’s spam, fraud, that kind of thing. A lot of it is bot-perpetrated, but quite a bit is by humans too.