Pavel Durov, chief executive of Telegram, will stand trial before French judge Paul Faure to decide whether to be formally charged for allegedly facilitating illegal activity on its platform. Judge Faure said the case was not just about individuals but also about the liability of technology companies. Mr. Durov could face up to 20 years in prison in a case that could become a major focus of global discussion about digital rights and corporate responsibility and could set a landmark precedent for content moderation liability.