Ninth Circuit rejects Google’s security argument against interoperability

What happened

The U.S. Court of Appeals for the Ninth Circuit ruled that Google’s claim opening its platform to third‑party app stores would harm security, rejecting the argument. The decision supports enforcement of interoperability requirements such as those in the EU Digital Markets Act.

Why it matters for trust and compliance

• Its status is decided. The case has an outcome that others may cite.
• The ruling clears a major legal obstacle to mandated interoperability, reinforcing privacy‑friendly competition.
• It relates to DMA. The regulations library explains what that law requires.

Who is affected

Recommended actions

1. Check that privacy notices describe the practices this addresses.
2. Map the security requirements to existing controls and close gaps.
3. Identify affected vendors and update due-diligence and contract terms.