Imperva: “Human-based Captcha solving services pose a serious threat to Web security” Captchas were originally intended to distinguish humans from computers, report says. Many corporate users purchase third-party software to bypass the Captcha system. The report also recommends creating a baseline of normal behavior in order to avoid automated attacks and denial of service. Blacklisting known bad sites and tracking reputation can also be employed to help identify which requests to block outright, Imperva’s report said.”]
Source: https://www.darkreading.com/attacks-breaches/hackers-offer-free-porn-to-beat-security-checks