Meta and Yandex are de-anonymizing Android users’ web browsing identifiers - Ars Technica
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Tracking code that Meta and Russia-based Yandex embed into millions of websites is de-anonymizing visitors by abusing legitimate Internet protocols, causing Chrome and other browsers to surreptitiously send unique identifiers to native apps installed on a device, researchers have discovered. Google says it's investigating the abuse, which allows Meta and Yandex to convert ephemeral web identifiers into persistent mobile app user identities.
The covert tracking—implemented in the Meta Pixel and Yandex Metrica trackers—allows Meta and Yandex to bypass core security and privacy protections provided by both the Android operating system and browsers that run on it. Android sandboxing, for instance, isolates processes to prevent them from interacting with the OS and any other app installed on the device, cutting off access to sensitive data or privileged system resources. Defenses such as state partitioning and storage partitioning, which are built into all major browsers, store site cookies and other data associated with a website in containers that are unique to every top-level website domain to ensure they're off-limits for every other site.
Well, it's always been a cat and mouse game.
Just earlier today, I got a pop-up on YouTube about how they would block me after 3 videos because I use an ad blocker. Jump to now and everything is fine again. Thank you, uBlock Origin!
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Tracking code that Meta and Russia-based Yandex embed into millions of websites is de-anonymizing visitors by abusing legitimate Internet protocols, causing Chrome and other browsers to surreptitiously send unique identifiers to native apps installed on a device, researchers have discovered. Google says it's investigating the abuse, which allows Meta and Yandex to convert ephemeral web identifiers into persistent mobile app user identities.
The covert tracking—implemented in the Meta Pixel and Yandex Metrica trackers—allows Meta and Yandex to bypass core security and privacy protections provided by both the Android operating system and browsers that run on it. Android sandboxing, for instance, isolates processes to prevent them from interacting with the OS and any other app installed on the device, cutting off access to sensitive data or privileged system resources. Defenses such as state partitioning and storage partitioning, which are built into all major browsers, store site cookies and other data associated with a website in containers that are unique to every top-level website domain to ensure they're off-limits for every other site.
I am assuming all of this trash is blocked by uBlock Origin?
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Well, it's always been a cat and mouse game.
Just earlier today, I got a pop-up on YouTube about how they would block me after 3 videos because I use an ad blocker. Jump to now and everything is fine again. Thank you, uBlock Origin!
they still try that?
i can't remember the last time i have seen one of those warnings.
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they still try that?
i can't remember the last time i have seen one of those warnings.
I'm guessing you use Firefox? It's much better at evading that tracking.
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I am assuming all of this trash is blocked by uBlock Origin?
Seems like it's transferred through a cookie and javascript, so in theory you can block it with ublock or noscript and the like, but a sure way to block is to not have meta apps installed on your phone (or not signed in).
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Seems like it's transferred through a cookie and javascript, so in theory you can block it with ublock or noscript and the like, but a sure way to block is to not have meta apps installed on your phone (or not signed in).
I don't have any Meta apps installed.
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I don't have any Meta apps installed.
That's the fun part. They come preinstalled!
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Tracking code that Meta and Russia-based Yandex embed into millions of websites is de-anonymizing visitors by abusing legitimate Internet protocols, causing Chrome and other browsers to surreptitiously send unique identifiers to native apps installed on a device, researchers have discovered. Google says it's investigating the abuse, which allows Meta and Yandex to convert ephemeral web identifiers into persistent mobile app user identities.
The covert tracking—implemented in the Meta Pixel and Yandex Metrica trackers—allows Meta and Yandex to bypass core security and privacy protections provided by both the Android operating system and browsers that run on it. Android sandboxing, for instance, isolates processes to prevent them from interacting with the OS and any other app installed on the device, cutting off access to sensitive data or privileged system resources. Defenses such as state partitioning and storage partitioning, which are built into all major browsers, store site cookies and other data associated with a website in containers that are unique to every top-level website domain to ensure they're off-limits for every other site.
Useless article, but at least they link the source: https://localmess.github.io/
We disclose a novel tracking method by Meta and Yandex potentially affecting billions of Android users. We found that native Android apps—including Facebook, Instagram, and several Yandex apps including Maps and Browser—silently listen on fixed local ports for tracking purposes.
These native Android apps receive browsers' metadata, cookies and commands from the Meta Pixel and Yandex Metrica scripts embedded on thousands of web sites. These JavaScripts load on users' mobile browsers and silently connect with native apps running on the same device through localhost sockets. As native apps access programatically device identifiers like the Android Advertising ID (AAID) or handle user identities as in the case of Meta apps, this method effectively allows these organizations to link mobile browsing sessions and web cookies to user identities, hence de-anonymizing users' visiting sites embedding their scripts.
UPDATE: As of June 3rd 7:45 CEST, Meta/Facebook Pixel script is no longer sending any packets or requests to localhost. The code responsible for sending the _fbp cookie has been almost completely removed. -
Tracking code that Meta and Russia-based Yandex embed into millions of websites is de-anonymizing visitors by abusing legitimate Internet protocols, causing Chrome and other browsers to surreptitiously send unique identifiers to native apps installed on a device, researchers have discovered. Google says it's investigating the abuse, which allows Meta and Yandex to convert ephemeral web identifiers into persistent mobile app user identities.
The covert tracking—implemented in the Meta Pixel and Yandex Metrica trackers—allows Meta and Yandex to bypass core security and privacy protections provided by both the Android operating system and browsers that run on it. Android sandboxing, for instance, isolates processes to prevent them from interacting with the OS and any other app installed on the device, cutting off access to sensitive data or privileged system resources. Defenses such as state partitioning and storage partitioning, which are built into all major browsers, store site cookies and other data associated with a website in containers that are unique to every top-level website domain to ensure they're off-limits for every other site.
Block all tracking scripts and use Firefox Nightly with ublock when possible.
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I don't have any Meta apps installed.
No WhatsApp?
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Tracking code that Meta and Russia-based Yandex embed into millions of websites is de-anonymizing visitors by abusing legitimate Internet protocols, causing Chrome and other browsers to surreptitiously send unique identifiers to native apps installed on a device, researchers have discovered. Google says it's investigating the abuse, which allows Meta and Yandex to convert ephemeral web identifiers into persistent mobile app user identities.
The covert tracking—implemented in the Meta Pixel and Yandex Metrica trackers—allows Meta and Yandex to bypass core security and privacy protections provided by both the Android operating system and browsers that run on it. Android sandboxing, for instance, isolates processes to prevent them from interacting with the OS and any other app installed on the device, cutting off access to sensitive data or privileged system resources. Defenses such as state partitioning and storage partitioning, which are built into all major browsers, store site cookies and other data associated with a website in containers that are unique to every top-level website domain to ensure they're off-limits for every other site.
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That's the fun part. They come preinstalled!
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Block all tracking scripts and use Firefox Nightly with ublock when possible.
Not sure about the "nightly" part (as opposed to beta or stable), but yes.
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Are you suggesting something like LineageOS is a better choice?
(Seriously asking: I've got a new-to-me Pixel that I'm looking to switch to a degoogled-ish ROM on, and Graphene and Lineage were the two front-runners.)
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they still try that?
i can't remember the last time i have seen one of those warnings.
The business cycle dictates that companies try to re-implement bad ideas every six months to two years.
If the idea was good, they'd have implemented it and made their money. Only bad ideas are still ripe for exploitation and new economic growth, because you haven't had someone as smart as me to make them work right.
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Tracking code that Meta and Russia-based Yandex embed into millions of websites is de-anonymizing visitors by abusing legitimate Internet protocols, causing Chrome and other browsers to surreptitiously send unique identifiers to native apps installed on a device, researchers have discovered. Google says it's investigating the abuse, which allows Meta and Yandex to convert ephemeral web identifiers into persistent mobile app user identities.
The covert tracking—implemented in the Meta Pixel and Yandex Metrica trackers—allows Meta and Yandex to bypass core security and privacy protections provided by both the Android operating system and browsers that run on it. Android sandboxing, for instance, isolates processes to prevent them from interacting with the OS and any other app installed on the device, cutting off access to sensitive data or privileged system resources. Defenses such as state partitioning and storage partitioning, which are built into all major browsers, store site cookies and other data associated with a website in containers that are unique to every top-level website domain to ensure they're off-limits for every other site.
We found that browsers such as Chrome, Firefox and Edge are susceptible to this form of browsing history leakage in both default and private browsing modes. Brave browser was unaffected by this issue due to their blocklist and the blocking of requests to the localhost; and DuckDuckGo was only minimally affected due to missing domains in their blocklist.
Aside from having uBlock Origin and not having any Meta/Yandex apps installed, anyone aware of additional Firefox settings that could help shut this nonsense down?
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I am assuming all of this trash is blocked by uBlock Origin?
EasyPrivacy should block Meta and Yandex pixels by default. If you have the knowledge you can put uBO in "hard mode" which will block all 3p connections. It requires you to know which CDNs to allow or websites will be broken.
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No WhatsApp?
I'd nail my foot to the floor before I installed WhatsApp.
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Are you suggesting something like LineageOS is a better choice?
(Seriously asking: I've got a new-to-me Pixel that I'm looking to switch to a degoogled-ish ROM on, and Graphene and Lineage were the two front-runners.)
I'm running Graphene and I'm very happy with it.
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Well, it's always been a cat and mouse game.
Just earlier today, I got a pop-up on YouTube about how they would block me after 3 videos because I use an ad blocker. Jump to now and everything is fine again. Thank you, uBlock Origin!
Fair warning: Last week one of my accounts was seemingly shadowbanned, and now gets "This content isn't available" on every video.
Logging out plays videos, making a new brand account worked, etc. and no notification from youtube.
