Complex sentence: The POODLE attack against TLS was found to be easier to initiate than the initial POODLE attack against SSL, no need to downgrade clients to SSL 3.0, requiring less "real-world" scenarios to appear active.
Split into simpler sentences: The POODLE attack against TLS was found to be easier to initiate than the initial POODLE attack against SSL. There is no need to downgrade clients to SSL 3.0, requiring less "real-world" scenarios to appear active.