A Los Angeles chamber is hosting what might be essentially the most consequential legal challenge to Big Tech ever.
It's an inflection point in the worldwide debate over Big Tech liability: For the primary time, a U.S. jury is being asked to come to a decision whether platform designs themselves may give rise to product liability — not due to what users post on them, but due to how they were built.
As one Technology Policy and Law ScholarI consider the choice, regardless of the consequence, will likely create a robust domino effect in jurisdictions across the United States and around the globe.
Case
The plaintiff, a 20-year-old California woman identified only by her initials, KGM, said she began using YouTube at age 6 and created an Instagram account at age 9. Intentionally unexpected rewards, Made him addicted. The lawsuit alleges that his addiction fueled depression, anxiety, body image disorders — when someone sees themselves as ugly or ugly when they don't seem to be — and suicidal thoughts.
TikTok and Snapchat settled ahead of the lawsuit with KGM for undisclosed sums, leaving Meta and Google because the remaining defendants. Mark Zuckerberg, CEO of Meta Testified before a jury. On 18 February 2026.
The stakes extend far beyond a plaintiff. The KGM case is a bellwether case, meaning the court selected it as a representative test case to assist determine decisions in all related cases. The cases involve roughly 1,600 plaintiffs, including greater than 350 families and greater than 250 school districts. Their claims are consolidated into one. California Judicial Council Coordination Proceedings, No. 5255.
The California proceeding shares legal teams and evidence pools, including internal meta-documentationwith a federal Multidistrict Litigation which is fixed. Advance in court After this yeargathering 1000's Federal cases.
Legal Innovation: Design as Defect
For a long time, Section 230 of the Communications Decency Act Protects technology corporations from liability for content posted by their users. Whenever people sued for damages related to social media, corporations invoked Section 230, and Cases usually die early.
KGM litigation uses a special legal strategy: negligent product liability. The plaintiffs argue that the damage just isn't brought on by the third-party content but by the platform's own engineering and design decisions, “information architecture” and Features that shape the user experience. of fabric. Unlimited scrolling, autoplay, notifications Calibrated to increase reflexes. And variable-reward systems operate on the identical behavioral principles as slot machines.
They are conscious. Product design choicesand the plaintiffs contend that they needs to be subject to the identical. Security Responsibilities As with every other manufactured product, their makers are thus held accountable. For negligence, Strict liability or BREACH OF WARRANTY OF FITNESS.
California Superior Court Judge Carolyn Kohl agreed that the claims warranted a jury trial. In its decision dated 5 November 2025 DENYING META'S MOTION FOR SUMMARY JUDGMENTit distinguished between features related to the publication of content, which Section 230 may protect, and features reminiscent of notification timing, engagement loops and the absence of meaningful parental controls, which it could not.
Here, Kohl established that the conduct vs. content distinction—treating algorithmic design decisions as an organization's own conduct and never as a protected publication of third-party speech—was a viable legal theory for a jury to review. This excellent approach to evaluating each design feature individually and recognizing the increasing design complexity of technology products represents a possible road map for courts across the country.
What did the businesses know?
The doctrine of product liability depends partly on what corporations knew concerning the risks of their designs. A 2021 leak of internal meta-documents, widely often known as “Facebook Papers” Disclosure that the corporate's own researchers The flag was planted Concerns concerning the effects of Instagram on youth body image and mental health.
Internal communications revealed within the KGM proceedings include exchanges between Meta employees comparing the platform's effects to promoting drugs and gambling. Whether this internal awareness constitutes the form of corporate knowledge that supports liability is a central factual query for the jury to come to a decision.
Ray Lustig/The Washington Post via Getty Images
There is a transparent analogy with tobacco litigation. In the Nineteen Nineties, plaintiffs were successful against tobacco corporations. Proving that they hid evidence. About the addictive and deadly nature of their products. In KGM, the plaintiffs listed below are making the identical basic argument: where corporate knowledge, intentional targeting and public denial, liability follows.
KGM's lead counsel within the case, Mark Lanieris identical lawyer who has won multi-billion dollar verdicts. Johnson & Johnson Baby Powder Litigationindicating the size of accountability they're following.
Science: Contested but fruitful
The scientific evidence on social media and youth mental health is real but truly complex. gave Diagnostic and Statistical Manual of Mental Disorders (DSM-5) doesn't classify social media use as an addictive disorder. Researchers like Amy Orbin Extensive studies have shown that Small average associations Between Social Media Use and Decline in Health.
Yet Orbán himself has warned that this average could mask serious losses by a subset of vulnerable young consumers. Especially girls aged 12 to 15 years. The legal query under the speculation just isn't whether social media harms everyone equally, but whether platform designers had a responsibility to account for potential interactions between their design features and the vulnerabilities of developing minds, especially when internal evidence suggested they were aware of the risks.
First, a manufacturer has an obligation to exercise reasonable care in designing its product, and this duty extends to damages which are reasonably foreseeable. Second, the plaintiff must show that the kind of injury suffered was a foreseeable consequence of the design alternative. The manufacturer just isn't required to estimate the precise injury to the plaintiff, but the final category of harm have to be inside the range that an affordable designer would expect.
This is why the Facebook Papers and internal meta-research are legally so essential within the KGM case: they go directly to determine that the corporate's own researchers have identified the precise categories of harm — depression, body dysmorphia, patterns of coercive use amongst teenage girls — that the plaintiffs allege they suffered. If the corporate's own data flagged these risks and leadership continued at the identical design pace, that might strengthen the forecast factor considerably.
Why it matters
Even if the science is unsettled, the legal and policy landscape is changing rapidly. In 2025 alone, 20 US states enacted the brand new law. Laws governing children's use of social media. And this wave just isn't only in America. Countries reminiscent of the UK, Australia, Denmark, France and Brazil are also moving forward with specific laws, including bans on social media for under-16s.
The KGM trial represents something more fundamental: the proposition that algorithmic design decisions are product decisions, with real responsibilities for safety and accountability. If this framework catches on, each platform might want to rethink not only what content is displayed, but why and the way it's delivered.