Researchers found that teens can discover harmful content, connect with unknown adults and easily bypass time limits.

© Manuel Ausloos/Reuters

Internal documents show how tech giants grabbed children’s attention throughout the day, a strategy that schools say has undermined education.

© Yana Paskova for The New York Times

Eric Swalwell used social media to boost his image and meet women, accusers said. Some of those same women used apps and influencers to join forces years later.

© Doug Mills/The New York Times