alt Hacker NewsAround 40,000 services on the Internet are currently including the header:
https://www.shodan.io/search/report?query=x-clacks-overhead+...
For some reason, a lot of honeypots are also using that header so I filtered those out. The number of services has slowly increased over time:
https://trends.shodan.io/search?query=x-clacks-overhead+-tag...
The result is very strange. It's saying that South Korea has the most number of websites with the header and yet I don't see ANY search result in Korean. No writeup or whatsoever. Wonder what those websites would be.