Comment by pcwalton

(Copying my comment here from Reddit /r/rust:)

Just to repeat, because this was somewhat buried in the article: Servo is now a multiprocess browser, using the gaol crate for sandboxing. This adds (a) an extra layer of defense against remote code execution vulnerabilities beyond that which the Rust safety features provide; (b) a safety net in case Servo code is tricked into performing insecure actions.

There are still plenty of bugs to shake out, but this is a major milestone in the project.