Stack Overflow sometimes asks to verify if you're a human being, especially if a lot of students coming from a proxy server are searching the site. According to Which browsers are officially supported, and what else do I need?, api.recaptcha.net should be whitelisted. However, in reality it seems that www.google.com needs to be whitelisted, which also results in having the search engine available, obviously. It can be tested by visiting https://stackoverflow.com/nocaptcha and using Developer Tools to view the network trace (see screenshot below).
As we sometimes administer programming exams, Stack Overflow is allowed to be used as a resource to resolve certain issues, but having the Google search engine - with all its additional features - available is a bridge too far.
I'm posting this here to accomplish one of two things (hopefully the first):
- Is it possible to have a captcha system that does not rely on
www.google.com? - OR could the documentation be corrected (which does not help us any further, but at least the documentation is correct).
See the Network tab of Developer tools to have a list of the domains that are being used:
