Technology
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I don't understand. Isn't someone just going to fork Chromium, take out this stuff, put in something that spoofs the DRM to the sites so that adblocking still works?
Part of the point is that you may not be able to spoof it.
On code I write on hardware I run locally, how is it ever possible to not be able to remove an element from the UI?
If you don't use a client with certain signature, the web request will end in different response, i. E. an empty response,, as if your client had a certain signature. Please correct me if I am wrong, though.
Why can't my modded client just give it that signature?
Because you don't have Google's private key. Same reason you can't watch Netflix episodes without Widevine.
I watch Netflix shows in high definition without widevine every day.
🏴☠️🚢
A private key to do what?
I only have the most cursory understanding of what Widevine is, but a quick Google reveals github projects claiming to spoof it.
Where I fail to understand is this. Whatever authentication the open source browser I modify needs to do, I can let it keep doing, because at some point it has to provide my browser C++ code with a clear text DOM before it renders it to an image to be displayed by my window manager. I can write that browser to simply remove DOM elements it deems to be ads - just like ublock does - before it renders it graphically.
The only way around this would be to turn browsers in to a completely dumb terminal that accepts an octet stream of pixel data so it can display bitmaps, which is completely unfeasible (every webserver would become a graphics card for each of it's users), and even if it did that, a simple neural net would identify the ads and remove them.
What am I missing?
— The explainer, section How it works.
— The explainer, section Web environment integrity.
Now Julien Picalausa of Vivaldi browser theorizes as follows:
So, AFAIU, if worst comes to worst you won't be able to run an unsigned browser and browse the web.
I still don't see why my open source browser can't just lie when it's sending a description of itself to the third party. The only way I could see it working is if that description needs to be encrypted by a key that's compiled in to a closed source browser, and then websites only accept requests from a few closed source browsers.
Is that what you're saying? That unless I have one of a couple accepted clients which are proprietary and closed source, websites just won't work?
It seems logical to assume that there would be no point to the whole thing if it was so easily avoided just by modifying your browser. Someone who's, for example, selling fake engagement (e.g., fake reviews), which is listed as one of the things Ben Wiser at al. want to prevent, will probably have enough technical expertise to use a modified browser that will circumvent WEI, so why would Google even bother?
To make it harder, even if not impossible, for the average user to ad block them.
Are you asking because you're not sure of the answer, or because you are, and you know that web integrity will require a pre-compiled closed source binary to browse the web?
No, I'm not sure. It's possible that this is a benign technology, but many believe it's not, including people at Mozilla, people at Vivaldi, Cory Doctorow, Jay Freeman (aka "Saurik"), the developer of Cydia (via The Register), so I'm concerned.
This recent blog post also mentions the intent of disallowing unsigned software to browse the web. Perhaps you'll find it interesting.
Okay, thanks.
Drink up, me hearties, yo ho!
Bro I’m watching a Netflix show right now and don’t have a subscription
Widevine has been hacked multiple times, it's the usual arms race.
Yes, upstream Chromium forks will likely try to remove this functionality, but
This is the part that is not possible. The browser is not doing the attestation; it's a third party who serves as Attestor. All the browser does is makes the request to the attestor, and passes the attestor's results to the server you're talking to. There is no way a change in the browser could thwart this if the server you're talking to expects attestation.
This violates just about every single open web principal that allowed Google to gain so much power. When they changed their motto from Don't Be Evil, to Do No Harm, they obviously chose deception. Their new motto should be Do Whatever is Profitable, or more succinctly Be Evil.
I don't really understand how that's possible. The browser gets a token from the third party, and passes that token to the server to "prove" it's running the DRM. The server then passes code back to the browser. At that point, why can't the browser just cut out the DOM elements which are ads?
I don't understand how code I write on hardware I run locally can ever have it's hands tied like this.
It won't be your hardware in a few years if this goes through. The code will run in a secure enclave and you won't be able to access your bank or log in to government websites if you control the hardware.
Android phones are starting to do this, and it's a nightmare for people like me who actually want to own the device they purchased.
Needing root access on Android to regain basic functionality (such as the ability to backup installed apps) is a sad indicator of where we're headed ☹️... As much as I dislike iOS's walled garden, they make backups dirt easy for the end user - and they do complete backups too - app data, homescreen layout and all.
I see what you're saying. I read it as implying the browser would fake the attestation token. I don't know the answer, but if their (stated) goal is to stop bots and scrapers, I have to assume it wouldn't be so simple. After all, a lot of bots and scrapers are literally running an instance of Chrome.