Meta is under investigation for a privacy violation called "localhost tracking." This process allowed Meta to link users' real identities to their web browsing activity, even if they used VPNs, incognito mode, and deleted cookies.
The process involves the Facebook or Instagram app listening for incoming traffic on local network ports and exchanging information with Meta's tracking scripts in users' web browsers.
zeropartydata.es/p/localhost-t…
“Localhost tracking” explained. It could cost Meta 32 billion.
You just can't finish off Zuckerberg.Jorge García Herrero (Zero Party Data)
Jochen Wolters
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