EU says TikTok's For You algorithm violates platform rules and must be redesigned

The European Commission has issued preliminary findings that TikTok's recommendation system breaches the EU's online platform rules, arguing that the algorithm behind the For You feed pushes users into what the regulator calls a "rabbit hole effect" — and leaving the company with a choice between redesigning the feed and facing fines of up to 6 percent of its global annual turnover.

What the Commission found

According to The Verge, the Commission announced on Friday that TikTok's algorithm can harm users through constant, repeated exposure to material tied to sadness, isolation and body image. Rather than pointing to specific videos or features, the regulator is targeting the mechanism that decides what each user sees next.

The findings build on an earlier conclusion by the Commission, issued months beforehand, that TikTok's overall design is too addictive.

Existing safeguards found ineffective

TikTok has already rolled out controls intended to soften the rabbit hole effect. Per The Verge, the Commission's preliminary view is that those measures are not working. As a result, the company is expected to change how the For You feed is designed; if it refuses, it risks financial penalties reaching 6 percent of its worldwide annual turnover.

The first case built on an algorithm

The Digital Services Act, in force since 2023, holds large platforms legally accountable for their impact on users, and the Commission has already opened proceedings against X, Meta, Temu and AliExpress under those rules. As The Verge reports, citing Politico, this is the first time the Commission has named a recommendation algorithm as the basis for a breach.

Henna Virkkunen, the Commission's executive vice president for tech sovereignty, security and democracy, said in the announcement that each scroll and each like teaches the algorithm to serve more of the same, drawing users into rabbit holes they struggle to escape. She added that the findings show TikTok must do more to protect users' well-being, including that of minors.

TikTok is also under pressure in the United States, where, as The Verge notes, lawmakers and a wave of lawsuits have raised concerns over child safety.

Why it matters

Most platform regulation to date has centred on content moderation — what gets removed and what is allowed to stay up. This case treats the recommender system itself, the core product mechanism that determines what billions of people see, as the violating feature. If the findings are confirmed, the direct consequence is a forced redesign of the For You feed in the EU, and the precedent extends to every large platform running an engagement-driven feed: the algorithm is now reviewable design, backed by fines that scale with global turnover. For TikTok specifically, the decision lands alongside mounting scrutiny in the US over child safety, putting two major jurisdictions on the same question — whether feeds optimised purely for engagement are compatible with user protection law.