More personal information than ever is being harvested for a new crop of identifiers that can be passed like cookies throughout the ad tech supply chain.
March 29, 2021

For years, privacy advocates argued that data collection and sharing among countless hidden ad tech intermediaries, via third-party cookies, was a privacy invasion. Now the digital ad industry is gravitating toward replacements that some in the privacy community consider even more invasive. today, more personal information than ever is being harvested for a new crop of identifiers that can be passed like cookies throughout the ad tech supply chain. Some require email addresses or phone numbers — first-party data — to work. Read more below.

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