Hours before Hamas began its deadly Oct. 7 attack, dozens of Hamas terrorists activated Israeli SIM cards, which Israeli intelligence officials noticed, according to the Israel Defense Forces.

The IDF and Shin Bet security agency denied initial reporting that there were thousands of militants who activated Israeli SIM cards, which are believed to have allowed the terrorists to communicate better, but they acknowledged that “several indicative signs accumulated, which included, among other things, the activation of only dozens of SIMs, which were activated in previous events in the past,” according to the Times of Israel.