Summary: Former Meta safety engineer Arturo Béjar testified on August 19, 2026 in a federal civil case brought by attorneys general from 29 states. He said he briefed Mark Zuckerberg at least 100 times, and cited internal surveys finding 51% of teen users had experienced something harmful in the prior seven days while only 0.02% of that content was removed. Meta denies the allegations and says it has built safety tools and removed young users’ accounts.
On August 19, 2026, Arturo Béjar, formerly a safety engineer at Meta, took the stand in federal court in Oakland, California. The civil case was filed jointly by attorneys general from 29 states, has only just opened, and is expected to run at least six weeks. It accuses Meta of knowingly building addictive products that harm young people, and of collecting data on users under 13 without parental consent; the states seek as much as $200 billion — roughly a year of Meta’s revenue — as well as court-ordered changes to how those products are designed. So far, Béjar’s testimony has drawn more attention than anything else in the trial.
The Witness: An Engineer Who Briefed Zuckerberg a Hundred Times
Béjar’s time at Meta came to roughly eight years across two stints, and he also consulted on Instagram’s safety work before leaving in 2021. He is no anonymous critic: since his departure he has testified before a US Senate committee and appeared in other child-harm cases, assembling a public record around precisely the claims now at issue here. Reuters’ account of the same testimony underscores how unusual it is for a company’s own former safety engineer to anchor a state-led case of this size. By his own estimate he briefed Zuckerberg on product issues at least a hundred times, and in 2021 he sent an email warning that reports of harm to teen wellbeing kept rising. His reason for escalating upward instead of quietly fixing things was, he said, simple: “when Mark makes something a priority, mountains move.” No reply ever came to those reports.
‘Don’t Ask, Don’t Tell’ — and Two Numbers
What Béjar described was an internal posture of “don’t ask, don’t tell”: the company knew its products were causing harm, recommendation systems pushing sexual-predator content and graphic imagery to teenagers among them. The numbers he gave were the most damning stretch of his testimony — internal surveys found 51 percent of teen users had experienced something harmful in the previous seven days, and only 0.02 percent of that content was removed. The gap between the two figures sits at the center of his argument: measurement existed inside the company, and removal did not follow it. If the 0.02 percent figure holds up under evidence, it puts a number on the distance between detecting harm and acting on it. A personal reason pushed him to testify as well: his own daughter received unwanted sexual advances and misogynistic insults on Instagram. Zuckerberg, he said, “created a false and misleading impression of Facebook’s commitment to young people.” A hundred briefings is not a stray complaint; it is a paper trail.
The Courtroom Fight: Meta’s Defense
Meta denies all the allegations. Its attorney, Paul Schmidt, told the court there is “no dispute” that people can struggle with social media, but argued that Meta has built tools to address the problem, bars under-13 registration, and has disabled more than 1 million accounts belonging to young users. Cross-examination took a different line, focusing on Béjar’s relationship with the company: he confirmed he had Zuckerberg’s support, left on good terms, and remains proud of the work he did there. Meta, in other words, did not dispute his experiences or his access — it disputed his conclusions, betting that a well-treated insider is a less sympathetic whistleblower.
Why This Trial Matters
Few lawsuits have a real chance of changing product design itself, and this is one of them: beyond money, the states are asking the court to force changes to how Meta’s products work, which would set a precedent for every platform that measures teen engagement. Both Zuckerberg and Instagram chief Adam Mosseri appear on the witness list, along with outside experts, so the coming weeks will show whether the company’s account of its internal warnings matches the documents. The procedure is worth watching too: discovery will pull years of internal surveys, emails, and product reviews into the public record, much of it material Meta never intended to publish. The states’ theory — that harm was measured, reported, and deprioritized — lives or dies on those documents. For platform engineering and product teams, the trial puts one question in the open: when internal data shows the product is harming users, what happens after the report goes up the chain? Béjar’s answer — a hundred briefings and one unanswered email — may become the standard citation in every future debate about platform governance.