Pen Registers Now Used to Monitor Web Trackers’ Data Collection
· 2h ago · Originally reported by PPC Land
Pen registers, traditionally used to log phone call metadata, are now being applied to track the data collected by web trackers. This approach focuses on recording addressing and routing information, not the actual content of communications.
Why it matters
Understanding how pen registers are used in digital environments highlights evolving methods for monitoring online tracking and privacy risks. It shows how old surveillance tools are being adapted for the digital advertising ecosystem.
Explain it like I’m new here
It's like keeping a list of who sends letters to your house without opening the envelopes to read what's inside.
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