other

Browser Integrity Check

A Cloudflare zone setting that inspects request headers and refuses clients whose User-Agent matches an internal list of strings associated with abuse, answering with a 403 and error code 1010.

Known aliases

Relationships

No evidence-backed relationships are recorded.

Current clusters

build1 publisher

Cloudflare's Browser Integrity Check answers Python's default user agent with a bare 403

A paid API on three Cloudflare zones had been returning 403 and no price to any caller that never set a User-Agent, and the origin logged none of it. The toggle that blocks them is on by default.

Publishers:dev.to

Reality

Evidence58
Adoption38
Hype gap+12
Incentives55
Confidence48