Facebook Inc. is conducting a broad review of all its data practices and taking a much more conservative stance on some policies, moves that could limit advertisers’ ability to target users on the social network, according to people familiar with the matter.
As part of the changes that will be rolled out over the next few weeks, Facebook said it will no longer let advertisers use information from third-party data brokers, like Acxiom Corp. and Epsilon Data Management LLC, in targeting of ads on its system.
