this post was submitted on 04 Jun 2025
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Meta found 'covertly tracking' Android users through Instagram and Facebook (news.sky.com)
submitted 4 days ago by rssbot@lemmy.bestiver.se to c/hackernews@lemmy.bestiver.se
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[–] chaospatterns@lemmy.world 4 points 4 days ago

They used a protocol called WebRTC that allows for establishing direct P2P connections to establish a connection to the Facebook app running on your phone. The FB app knew your identity so it was able to link your in browser actions with your FB identity.