Why a classic CDP bot detection signal suddenly stopped working

3 avastel 2 8/28/2025, 1:07:14 PM blog.castle.io ↗

Comments (2)

bediger4000 · 7h ago

Google does everything it can to prevent adblocking. Then it also does everything it can to make bots undetectable, as this article outlines. Google should watch out, lest people get the impression they're anti-consumer.

avastel · 7h ago

(Author here) TBH I don't think the main goal of Google was to make bots undetectable. It was more a side effect of preventing side effects while reviewing errors in the devtools: https://source.chromium.org/chromium/_/chromium/v8/v8/+/e08e...

It was the same when Google released the new headless Chrome a few years ago: https://antoinevastel.com/bot%20detection/2023/02/19/new-hea... It made vanilla/naive bots more realistic/detectable by default.