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Why do Cloudflare checks and endless captchas constantly pop up with a VPN?

WEBSITES PROTECT THEMSELVES AGAINST BOTS DUE TO THE POOR REPUTATION OF OVERLOADED SERVER IPS.
Public servers are used by hundreds of people simultaneously, generating a suspiciously high volume of network requests. Site firewalls spot abnormal traffic originating from hosting IPs and demand manual confirmation from users.

IP Scoring Algorithms in Defense Systems

Security services rank incoming network addresses by trust levels. Regular home ISP addresses get top priority, whereas commercial data center IP pools are flagged upfront as potential sources of automated scraping, vulnerability scanning, or spam mailings.

How to Get Rid of Annoying Captchas

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