WTF is differential privacy?
Briefly

In a nutshell, a differential privacy algorithm injects random data into a data set to protect individual privacy.
An advertiser viewing differential privacy data might know that 150 out of 200 people saw a Facebook ad and clicked through to its site, but not which 150 people.
Who is driving this? There is a Truth in Measurement cross-industry collective of advertisers, publishers, and tech.
Read at Digiday
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