The Friday cybersecurity attack using connected devices, or the Internet of Things, was serious, unusual and historic. The attack, which affected a number of major Web sites, reportedly used Internet-enabled cameras as a platform for a DDoS attack. The attackers exploited manufacturer-set passwords that hadn’t been reset by users. “This is just the beginning,” said Sanjay Sarma, a professor of mechanical engineering at MIT who has done pioneering work on IoT systems “There’s more coming, sadly perhaps a power plant””]