I wonder if captcha is enabled by default. If so, how do I trigger it?
If you are a website owner, you can create a Firewall Rule (or an IP Access Rule) with a Challenge action. That will make your visitors (or some of them) go through Captcha before they reach your site, and it’s a great tool to deflect bots.
If you are a website visitor, there’s nothing you can do, except convincing the website(s) owners that you deserve being whitelisted from the Challenge/Captcha they’ve set up.
Please see the info below on what causes a visitor to be Challenged (presented with a Captcha):
Most likely, there has been security events relating to your IP address which has caused you to hit a bad reputation. Please review your network and confirm that you have no infected devices. Once that has been confirmed, the IP reputation will naturally improve.
If for any reason the IP reputation score increases again, the likelihood is that you still have something which is infected on your infrastructure.
Often this is caused by:
- Computer/IoT device infected with malware or some kind of virus.
- Scripts or bots (e.g., scrapers) carrying out automated tasks across sites.
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