“To be clear, these passwords were never visible to anyone outside of Facebook and we have found no evidence to date that anyone internally abused or improperly accessed them,” vice president of engineering, security, and privacy Pedro Canahuati said in a blog post.

The survey also gauged public reaction to more limited uses of autonomous vehicles. Just more than half of U.S. drivers—53 percent—said they would be comfortable using fully self-driving vehicles as low-speed people-mover systems at airports or theme parks, free from the chaotic traffic of the open road. Even fewer Americans—44 percent—said they would be comfortable with autonomous delivery vehicles that haul food or packages, not passengers.

The company has previously characterised the software upgrades as an effort to make a safe plane even safer. Engineers are making changes to the system designed to prevent an aerodynamic stall if sensors detect that the jet’s nose is pointed too high and its speed is too slow. Satellite-based data showed that both the Ethiopian Airlines and Lion Air planes flew with erratic altitude changes that could indicate the pilots struggled to control the aircraft. Both crews tried to return to t ..