A Los Angeles jury found Meta and Alphabet’s Google liable in a landmark social media addiction trial, deciding that both companies were negligent in the way they designed their platforms for young users. The verdict, delivered on March 25, 2026, awarded $6 million in total damages and is expected to be treated as a bellwether for thousands of similar lawsuits now moving through the courts. The jury awarded the plaintiff $3 million in damages and later recommended another $3 million in punitive damages; the judge will make the final determination on damages.
The plaintiff, known in court as KGM. She testified that she began using YouTube at age 6 and Instagram at age 9, and that she was on social media “all day long” as a child. Her lawyers argued that the social media harm came from the way the products were built to keep young users engaged, not from the fact that she used them.
3 key ways young users were harmed
The trial centered on three design features that plaintiffs said were intended to keep young users online for longer periods: the endless feed, autoplay, and notifications. AP reported that lawyers for the plaintiff argued those features were designed to “hook” young users by removing natural stopping points and encouraging repeated checking. The plaintiff became addicted in part because of the attention-grabbing design, including “infinite scroll.”
First, infinite scroll meant there was no clear endpoint to the feed. YouTube Shorts and Instagram feeds used this kind of endless content delivery, which plaintiffs said encouraged users to keep looking for more posts and videos. That design can make it harder for a young user to recognise when to stop.
Second, autoplay reduced the need for a user to make a conscious choice to continue. The plaintiff’s lawyers cited autoplay as one of the mechanisms that kept young users engaged and made sessions longer than they planned.
Third, notifications repeatedly pulled users back into the apps. The plaintiff’s team said notifications were part of the same engagement system, designed to keep young users returning even when they were not actively trying to use the platform.
“Engineered addiction” through design
At the center of the case was a straightforward legal argument: the platforms were designed to be sticky. The jury agreed the companies had designed their products to hook young users without adequate warnings. The plaintiff’s team focused on platform engineering, not on arguing that social media content itself caused the harm.
U.S. law broadly shields platforms from liability for user-generated content, but it does not automatically protect product design choices. The Los Angeles case was deliberately built around design rather than content, which makes it a potentially important test of whether companies can be held responsible for the mechanics of engagement itself.
Mental health impact linked to usage patterns
The jury accepted that the plaintiff’s social media use was a substantial factor in causing her harm. The jury found the companies’ negligence was a substantial factor in the harm suffered by KGM, and that the companies knew their platforms could be dangerous for minors but failed to adequately warn users. The case, therefore, linked the harm not to a single moment or feature alone, but to long-term usage patterns reinforced by design.
Meta argued that the plaintiff’s struggles were tied to her home life and said her therapists did not identify social media as the cause. YouTube argued it was more like a video platform than a social network and said the plaintiff’s YouTube use declined over time. The jury rejected those defences, at least at this stage, by deciding that the platforms’ design still played a substantial role in the harm.
The case targeted design, not content
One of the most important features of the lawsuit is what it did not try to do. The jurors were told not to weigh the specific posts or videos the plaintiff saw, because Section 230 of the Communications Decency Act shields tech companies from legal responsibility for posted content. The case, therefore, focused on the architecture of the platforms: how they are built, how they keep attention, and how they warn or fail to warn young users about the risks.
That makes the ruling significant beyond this one plaintiff. The verdict could affect thousands of similar cases, and it may influence how courts treat claims that social media companies designed products in ways that harmed minors. For the industry, the legal pressure is no longer only about what appears on the screen. It is also about the machinery underneath it.
