Treaty Would Require Facebook, WhatsApp to Share Messages with U.K Police

Social media platforms based in the U.S. including Facebook and WhatsApp will be forced to share users’ encrypted messages with British police under a new treaty between the two countries, according to a person familiar with the matter. The accord, which is set to be signed by next month, will compel social media firms to share information to support investigations into individuals suspected of serious criminal offenses including terrorism and pedophilia, the person said.