WSJ Tech News Briefing

Shares of Pinterest fell 17% in extended trading after it posted a wider-than-expected loss in its first report after its market debut. Plus, a look at WSJ's feature on the science of distractions and how smartphones are messing with our brain's ability to focus. Learn more about your ad choices. Visit

Microsoft took the unusual step of warning that a computer bug it has now patched could be used by a cyber weapon similar to the WannaCry worm, which spread across the globe two years ago. The Wall Street Journal's Robert McMillan has more. Learn more about your ad choices. Visit

Tesla raised a total of $2.7 billion in convertible debt and stock earlier this month, but perhaps Investors shouldn't expect much mileage out of its latest capital increase. Learn more about your ad choices. Visit

The Supreme Court ruled consumers can proceed with a suit challenging Apple's control over the marketplace for iPhone apps, threatening the tech giant's slice of billions of dollars in sales. The Wall Street Journal's Tripp Mickle has the details. Learn more about your ad choices. Visit

Advocacy groups say Echo Dot Kids device improperly retains conversations of users. The Wall Street Journal's Betsy Morris has more. Learn more about your ad choices. Visit