I have encountered websites that detect the presence of PiHole Adblocker and refused to serve the requested page until the Adblocker is removed. However, recently, I have observed a shift in behavior to where the website requests the Adblocker to be disabled while displaying a condescending and guilty feeling for depriving them of revenue message that does include an option to proceed with the Adblocker active.
My question is how do these pages detect the PiHole Adblock presence?
This website is an example:
Thank you.
Butch