Source: The Guardian

The Guardian reports on the landmark legal victory of lawyer Mark Lanier against Meta and Google in the case of KGM v Meta et al. The lawsuit, brought on behalf of a 20-year-old woman named Kaley, successfully argued that Instagram and YouTube were addictive by design and had caused her to develop body dysmorphia, anxiety, and depression starting from childhood. The trial took place in a Los Angeles court, culminating in a verdict on March 25, 2026, where the jury found the tech giants liable and awarded Kaley $6 million in compensatory and punitive damages. Lanier described the case as a "righteous case" and a "holy war" against companies exploiting vulnerable children.

The article details Lanier's innovative legal strategies, including the use of a bespoke AI to create psychological profiles of the anonymous jurors and test arguments on a "shadow jury." The prosecution's case was built on internal documents from Meta and Google, which revealed the deliberate use of "casino science" and "dark patterns" to create "addiction machines." Evidence showed the companies were aware of the harm their platforms could cause to young users' mental health but prioritized engagement and growth. Mark Zuckerberg and Instagram head Adam Mosseri both testified during the high-stakes trial.

This victory is considered a "big tobacco moment for big tech," setting a precedent that could pave the way for over 2,000 similar lawsuits and potential damages in the tens of billions. Lanier, who has previously won major cases against Johnson & Johnson and opioid manufacturers, is now involved in further litigation against platforms like Roblox and OpenAI. Kaley's case is seen as a major reckoning that could threaten the fundamental business model of social media companies, forcing change through the legal system where political action has failed.