Federal appeals court rules Twitter not legally responsible for two American deaths in ISIS-linked attack, says ISIS' Twitter use not directly linked to attack
Bob Egelko / San Francisco Chronicle :
Context & Ripple Effects
This ruling closes one leg of a liability fight that opened with the 2016 federal lawsuit in California claiming Twitter was responsible for ISIS tweets and questioning publisher liability exemptions. The appeals court rejects that theory on causation grounds: ISIS used Twitter, but its Twitter activity was not directly linked to the attack that killed two Americans.
First-order effects
- The families' claims against Twitter fail at the appellate level, and Twitter exits the case without owing damages for hosting ISIS-related content.
Second-order effects
- The 'no direct link' reasoning becomes precedent other platforms can invoke against similar terror-content suits, and it frames the question the Supreme Court later takes up in Twitter v. Taamneh.
Third-order effects
- The arc runs through to 2023, when the Court shields Twitter in Taamneh while sidestepping Section 230 itself — leaving causation analysis, not the statutory shield, as the operative limit on platform liability for third-party content.
The trend: Courts are narrowing platform accountability for user-posted extremist content through direct-causation tests rather than through Section 230 itself.