WSJ Tech News Briefing

With his company under a regulatory spotlight, Facebook's Mark Zuckerberg faced tough questions from lawmakers on Capitol Hill this week. The Wall Street Journal's Brent Kendall has more. Learn more about your ad choices. Visit

As cities across the globe use technology to connect their services and residents, they become more vulnerable to cyberattacks. The Wall Street Journal's James Rundle breaks down the the potential weak spots. Learn more about your ad choices. Visit

Apple, Google and Amazon are taking new steps to help parents monitor their kids online. The Wall Street Journal Julie Jargon has more on how the settings section of many common devices let parents do everything from block explicit content to set a fixed bedtime-all without paying extra or worrying about privacy. Learn more about your ad choices. Visit

A year after U.S. authorities closed Backpage.com, the biggest player in the online sex-for-sale industry, investigators are now focused on three websites now dominant in the American market. The Wall Street Journal's Lalita Clozel has more. Learn more about your ad choices. Visit

After a decade of solid growth, are regulatory actions around globe threatening the gig economy? The Wall Street Journal's Alejandro Lazo explains why gig-based companies like Uber and Lyft are on the defensive. Learn more about your ad choices. Visit