Archive · 21 Aug 2026
Time and Time Again, Meta Teen-Harm Research Faces Trial Scrutiny
Several states are accusing Meta of knowing that its social-media platforms could harm teenagers.
They say Meta's own research found problems involving young users.
The states also say the company chose not to adopt some safety measures because they might reduce engagement or revenue.
A judge allowed some internal research to be used as evidence.
The states claim Meta gave lawmakers less certain answers than its private research supported.
Meta says the states are selecting only the most damaging documents from millions of internal records.
The trial will examine what company leaders knew and what they did about it.
Mark Zuckerberg and Adam Mosseri are expected to answer questions.
The allegations have not yet been proven in court.
California and other states allege Meta knew its platforms harmed young users.
A federal court ruled Meta could not withhold certain teen-harm research under attorney-client privilege.
States say Meta shelved proposed safeguards after weighing their effects on engagement and revenue.
Unsealed filings allege Meta gave the Senate unclear answers about platform links to anxiety and depression.
Mark Zuckerberg and Adam Mosseri are expected to testify as Meta contests the states' interpretation of its documents.
- Who
- California and other states are suing Meta; Meta executives Mark Zuckerberg and Adam Mosseri are expected to testify.
- What
- The trial examines allegations that Meta knew about teen-related harms, failed to adopt safeguards, and misrepresented its knowledge to the United States Senate.
- When
- The trial is currently taking place; senators demanded documents from Zuckerberg in 2023.
- Where
- The case is being heard in federal court in Oakland, California.
- Why
- The states seek to show that Meta's internal research reached decision-makers and that the company prioritized engagement or revenue over proposed protections.
States' Allegations
Meta's Defense
What internal research shows
States' Allegations
The states say Meta's research documented harms to young users and that this knowledge existed within the company.
Meta's Defense
Meta says the states are selecting the most damaging documents from a much larger body of internal debate.
Product safety decisions
States' Allegations
The states allege executives understood that some product decisions could harm teenagers and rejected safeguards because of their effect on engagement or revenue.
Meta's Defense
Meta disputes the states' characterization of its policies and decisions, arguing that isolated comments do not establish what the company ultimately decided.
Public statements to lawmakers
States' Allegations
The states allege Meta told the Senate it could not determine whether its platforms were linked to increased anxiety and depression despite relevant internal work.
Meta's Defense
Meta's broader defense is that the states have misrepresented the company's evidence and policies; the court will assess whether the alleged contradiction is substantiated.
- Court
- A federal court held that Meta could not use attorney-client privilege to withhold specified internal research and documents relating to teen harm.
- States' central allegation
- Meta's internal research identified harms to young users while the company publicly maintained that the evidence was unclear.
- Product safeguards
- The states allege executives shelved proposed safeguards because of their potential costs to engagement or revenue.
- Senate statements
- Unsealed filings allege Meta told the Senate Judiciary Committee it could not determine whether its platforms were linked to increased anxiety and depression among young users.
- Expected witnesses
- Mark Zuckerberg and Adam Mosseri are expected to testify.
- Meta's defense
- Meta argues that the states misrepresented its platforms and policies by cherrypicking internal documents and comments.
- Status of allegations
- The claims have not been established by a court; the trial is intended to test them.