Israel reportedly co-opted a popular Iranian prayer app Saturday to send mass notifications urging defections from the Islamic regime. The BadeSaba Calendar app, utilizing its extensive reach inside Iran, helps users track daily prayer times and religious observances, the Wall Street Journal reported. It has logged more than 5 million downloads on the Google Play Store alone, giving operators access to a vast domestic audience. Screenshots posted on social media show a burst of Persian-language notifications declaring “help has arrived.” The cyber operation apparently took place as Israel and the United States launched a sweeping waves of strikes against Iranian...