He believes they remain secure even after the successful assassination of Nasrallah. He discussed in an interview with Judge Napolitano that the attack was the result of a humint breach (he saw the fact that Netanyahu approved it from the US the opportunity presenting itself through new intel) and stressed that it’s hard to get senior people to do things like never use cell phones (Note that an Iranian Republican Guard members were also killed in the same meeting; it’s possible the breach came from the Iran side).

This tracks with my thoughts.