Our systems have detected unusual traffic coming from your computer network. This page is to check if you are actually sending requests, not a robot.
What to do when you see this message
The error page most likely shows a reCAPTCHA . To continue using Google, solve the reCAPTCHA. It's how we know you're a human, not a robot. After you solve the reCAPTCHA, the message will go away and you can use Google again.
I just often send a query to google.
Of course I mark, but still with my IP again, after some time it is blocked.
Is silly google does not understand that I am not a robot, but a human being.
Sometimes, Private Browsing can cause that.
Some specific types of shared connections may cause it.
Obviously Google knows everything about you, so just changing your habits to something out of the norm may trigger it.
I hit it, from time to time, usually when doing a search in a Private Window (& come to think of it, in an instance like that, most likely I'm not sending a referrer either).