Event Summary
On August 4, 2026, the US Court of Appeals for the Ninth Circuit vacated a preliminary injunction against Perplexity's browser agent in Amazon's lawsuit, ruling that under CFAA and CDAFA, access is performed by the directing user rather than the software tool.
Context & Narrative
Amazon sued Perplexity over its 'Assistant' browser tool, alleging unauthorised access to user accounts in violation of federal CFAA and California CDAFA statutes. On August 4, 2026, a Ninth Circuit panel vacated the district court's preliminary injunction, holding that computer 'access' under CFAA contemplates entry by a person, and because communications pass through the user's computer at the user's direction, it was the user who accessed Amazon's servers. The court explicitly noted that contract, terms of service, and tort theories remain open for further litigation.
Key Findings
-
Fact Grade B
On August 4, 2026, a Ninth Circuit panel vacated Amazon's preliminary injunction against Perplexity, holding that CFAA 'access' is performed by the directing end-user rather than the software agent.
-
Impact Grade C
Provides an appellate precedent protecting AI agent developers from federal anti-hacking claims when actions are routed strictly through an authenticated end user's device.
Sources [2] -
Limitation Grade B
The panel's decision addresses only CFAA and CDAFA statutory theories and explicitly leaves breach of terms of service, contract, and tort claims open for further litigation.
Impact Assessment
-
Paradigm Shift +2 · Long-term
Establishes legal precedent limiting federal anti-hacking statutory liability for user-tasked browser agents.
Affected Groups: AI developers, website operators, courts, consumers
Consensus & Sources
-
1
Reference Evidence Citation logged Live source
-
2
Reference Evidence Citation logged Live source