Kristen Grind

Elon Musk and his rocket company, SpaceX, have repeatedly failed to comply with federal reporting protocols aimed at protecting state secrets, including by not providing some details of his meetings with foreign leaders. Concerns about the reporting practices—and particularly about Mr. Musk, who is SpaceX’s chief executive—have triggered at least three federal reviews. The Air Force also recently denied Mr. Musk a high-level security access, citing potential security risks associated with the billionaire.

The world’s biggest social-media companies, under fire for failing to police content on their sites, have invited an array of outside groups to help them figure out who should be banned and what’s considered unacceptable. That solution is creating a new set of problems—public fights, complaints and legal battles. Facebook, Twitter and YouTube have made a concerted push to seek out input from hundreds of groups, a growing number of which lean to the right. The companies have become receptive to behind-the-scenes lobbying as well.

Facebook struck customized data-sharing deals with a select group of companies, some of which had special access to user records well after the point in 2015 that the social-media giant has said it cut off all developers from that information, according to court documents.  The unreported agreements, known internally as “whitelists,” also allowed certain companies to access additional information about a user’s Facebook friends.