This is the best summary I could come up with:

IP Protection, previously referred to as “ip-blindness” or “Gnatcatcher,” is a proxy system similar to Apple’s Privacy Relay.

MOW objects to this project as a violation of Google’s commitments to the CMA, a set of promises the ad biz made to the UK competition watchdog to win approval for its plan to replace third-party cookies with Privacy Sandbox technologies.

“Google’s IP Protection means ISPs will no longer have visibility of data via an IP address whist leaving Google with the ability to monitor and process data at all times,” says a letter from MOW’s London-based legal representative Preiskel & Co LLP to the CMA and to UK telecom regulator Ofcom, which was provided to The Register.

And marketers, like law enforcement agencies, fear that privacy technologies will leave them in the dark and without the lucrative data they’ve come to depend upon.

For example, one pseudonymous individual who claims to help advertising clients optimize Google AdWords campaigns says that IP addresses play a critical role in fraud prevention.

“This is a blatant and egregious breach of the commitments made by Google to the CMA to prevent it acting in an anti-competitive fashion,” said Tim Cowen, co-founder of MOW, in a statement provided to The Register.

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