A California jury ruled Meta and YouTube negligent in designing addictive features that harmed a young user, awarding $3 million in damages. The verdict validates a novel legal theory that social media platforms can cause personal injury through product design. This bellwether case could trigger more lawsuits against tech giants, forcing changes to their apps for minors.

K.G.M., a now 20-year-old plaintiff, sued Meta (owner of Instagram) and YouTube over features like infinite scroll and algorithmic recommendations. She testified these caused anxiety, depression, and body dysmorphia starting at age six. The companies argued her mental health issues stemmed from familial abuse, not their platforms.

The decision follows similar rulings against Meta in New Mexico, where the state attorney general won $375 million for failing to protect children from predators. Legal experts say if more juries side with plaintiffs, it could fundamentally alter how social media companies design products for young users, though the industry may still rely on Section 230 protections.