Twitter Loses Two Top Executives Managing Site Content Safety

Two executives in charge of keeping Twitter’s website safe and free of harmful content have resigned, setting up challenges ahead with the company’s advertisers and users.

Ella Irwin, the Twitter executive in charge of content moderation and policy, has resigned, she said in an email. So did AJ Brown, according to a person familiar with the matter. He was head of advertising quality and “brand safety” — which refers to ensuring content is appropriate to run alongside advertisers’ promotional campaigns.