Billionaire Elon Musk is already floating major changes for Twitter — and faces major hurdles as he begins his first week as owner of the social-media platform. Twitter’s new owner fired the company’s board...

Ukraine is counting on more Western technological support as its war against Russia drags on, with Microsoft pledging Thursday to extend its backing for Kyiv’s “extraordinary” wartime innovation through the end of next year....

Elon Musk said Wednesday that Twitter will not allow anyone who has been kicked off the site to return until it sets up procedures on how to do that, a process that will take...

Conspiracy theories about mail ballots. Anonymous text messages warning voters to stay home. Fringe social media platforms where election misinformation spreads with impunity. Misinformation about the upcoming midterm elections has been building for months,...