As someone who has witnessed BiScience tracking in the past, I am not surprised to to hear that they might be involved in all this. They came up in the past when researchers investigated the cyberhaven compromise [1][2]. Though the correlation might not all be there its kind of disappointing

[1] https://secureannex.com/blog/cyberhaven-extension-compromise.... [2] https://secureannex.com/blog/sclpfybn-moneitization-scheme/ (referenced in the article)

To note, there are undocumented detections to even Proxys, for example using `in` operator in v8 (such as `proxiedFunc in 1` for some proxied function). Really cool to see a project like this.

How do you use `in` in v8 to detect proxies? I assume its a difference in the exception, but the message and the cause were the same in both direct and proxied `x in 1`.

Ah wow, good catch- yeah, you're right, this technique seems to be patched