@halfbit_ @sponsorblock I think you're underestimating how asymmetric this fight is. They already obfuscate their JS, but it doesn't help. You can simply run their js, obfuscation and all, in a sandbox. Google has to spend weeks of engineering to design and test a change, while all uBO needs to do is to make it look to the javascript like the ad played, something they can do in minutes or hours thanks to the web being an open platform. This is the computer science equivalent of guerilla warfare.