We are investigating an issue with our Frankfurt IV, London III and Paris II data centers. Some customers may experience intermittent issues with Google Captcha redirection. Some Google searches are redirecting to a Captcha validation page with the following message "To continue please type the characters below: Our systems have detected unusual traffic from your computer network. This page checks to see if it's really you sending the requests and not a robot". We will post additional information on this incident as it is available.
Update: 6/19/2018 10:34:09 UTC - This incident has been resolved. Please contact Zscaler Support if you have additional questions.