Facebook moves to make political ads more transparent

After playing down problems with the site for months, Facebook has begun to make changes after revelations that the political consulting firm Cambridge Analytica had improperly harvested the data of up to 87 million users.

The Menlo Park company announced a series of moves meant to improve the transparency of political ads and pages on its social media service. The changes came just days before CEO Mark Zuckerberg is to testify before Congress.

Zuckerberg said in a post that Facebook has started requiring advertisers to verify their identity and location before they can run political ads.