Former CIA director David Petraeus says WikiLeaks publishing this week what it claims to be a trove of CIA hacking documents could be as damaging to national security as former NSA contractor Edward Snowden’s 2013 leak of secret information from the National Security Agency’s surveillance programs.

Speaking to KPCC this week, Petraeus said, “It clearly is on the order of the damage done by Snowden,” referring to disputed reports that terrorist leaders changed how their communication methods after Snowden shed light on NSA surveillance techniques.