In the wake of the massive intelligence failure of October 7, fundamental changes will have to be made to Israeli national security doctrine. The intelligence community is obliged to improve its early warning capabilities – not merely in an attempt to prevent another great failure of the kind that might occur once in 50 years, but to improve its ability to contribute to the ongoing security effort. Israeli intelligence committed seven “sins” in the lead-up to October 7 that will have to be examined closely if the required changes are to be put in place. Those “sins” are politicization, certainty, preoccupation with cyber, targeting, professionalism, understanding, and risk management.