The issue focused on Facebook's announcement that it would begin requiring internet companies to store user data for two years in servers located outside the United States. The technology company said it had received thousands of consumer complaints about its practices.

Mr. Pewson was critical of Facebook's application of digital advertising techniques, saying they too often presented websites with misleading ads and automated messages about friends' activities. He called them "deceptive digital technologies."From Microsoft Windows systems to smartphones, computers are becoming devices that perform computer tasks