Ad Tech Mark Zagorski Is Leading DoubleVerify’s CTV Push He says there's an opportunity to be 'better than Nielsen' Mark Zagorski joined DoubleVerify as CEO on July 21. Business Wire By Andrew Blustein September 30, 2020 Andrew Blustein @andrewblustein andrew.blustein@adweek.com Andrew Blustein is a programmatic reporter at Adweek. Recommended articles