class Rack::Protection::FormToken

Prevented attack

CSRF

Supported browsers

all

More infos

en.wikipedia.org/wiki/Cross-site_request_forgery

Only accepts submitted forms if a given access token matches the token included in the session. Does not expect such a token from Ajax request.

This middleware is not used when using the Rack::Protection collection, since it might be a security issue, depending on your application

Compatible with rack-csrf.