Maybe the security system detects something unusual about your IP address or browser. Could be a false positive. Try a different browser or different VPN (if any), and see if there's any difference.
Lol...I used to get this and still do at times. It is as Sols said. @James Spader will be able to explain better but its typically due to DDOS protection on servers detecting suspect traffic from your method of connecting to the site.
Don't get too frustrated it is there to protect the stability of the site.
wherever fucking Cloudflare is involved it's almost impossible to resolve it directly - it might your IP, your (outdated or unusual) browser, your TLS footprint, your canvas footprint, ...
First of all, I have edited the title, we don't need such language here!
On a second note, there is a reason for why we have enabled captcha for some countries and some metrics. As @void already explained, we can't control everything in regards to cloudflare.
What is sure, it protect us from DDOS attacks, BOTS and other unliked traffic. For that reason, it will stay until we adjust our cloudflare settings again.
It is a balance between user experience and security, we try to do the best we can and always pay attention to complains.
You mean it started to appear for you around 2 weeks ago for you. For me it has been at least a year off and on. However it is not a concern for me. If you have issues then change your method of connection to something less fishy. Again don't get too frustrated your not only one affected thu&¤#
I bet OCT doesn't have Enterprise license but a cheaper one where not much is customizable - in this case the customer is sometimes surprised what's going on after CF updates...