Scammers are capitalizing on the rush of consumer interest in artificial-intelligence tools to steal U.S. small businesses’ social-media-account passwords, Google alleges in a new lawsuit. 

The lawsuit, filed Monday, targets unnamed individuals in India and Vietnam. Google said the hackers have been tricking small-business owners into clicking on Facebook ads that offer to download Google’s Bard artificial-intelligence chatbot. When they do, the ads hit them with malware that steals their social-media credentials.