When Meta, Google and Apple agree on a “privacy” feature, watch out. The three companies (along with Mozilla, which is on one of their “ad features in the browser” kicks again) are drawing up a built-in advertising measurement system, called Attribution Level 1 , as a standard feature of web browsers. The system is intended to measure the effectiveness of advertising by enabling advertisers to correlate “impressions,” the occasions on which someone saw an ad, with “conversions,” when people bought something. Don’t look for a section on permissions or consent in that document, by the way. There isn’t one. And nothing about nerd lawyer stuff like “opt out of sale” or “objections to processing” in there, either. The Big Tech companies want a two-track system, where other companies’ ad features are required to do all the privacy regulation hassles, but the browser’s own built-in tracking feature is something that people have to find the right setting for and turn off.…