Early on Saturday, cities across Iran, including its capital Tehran, were rocked by a series of U.S. and Israel-led airstrikes that killed the country’s supreme leader, Ali Hosseini Khamenei, and top leadership. According to reports, the military campaign coincided with cyberattacks targeting the country, one of which flooded a popular phone app with notifications, amid an ongoing outage across the Iranian internet. The strikes came after several days of failed negotiations between Tehran and Washington. The negotiations were held after weeks of mass protests that saw thousands of people killed alongside the country’s longest internet shutdown to date. As missiles struck Iranian cities, people on the ground reported being flooded with unsolicited app notifications — not from the ailing government, but from an apparent outsider.…