build1 distinct publisher
The block happens in the ClientHello, which is why your header budget buys nothing
A dev.to writeup traces stubborn 403s to the TLS handshake: JA4 sorts the client before a header is read, and a User-Agent that disagrees with the handshake is worse than no lie at all.
Publishers:dev.to
Reality
- Evidence42
- Adoption18
- Hype gap+12
- Incentives24
- Confidence48