IBM's X-Force team hacks into smart building

As buildings get smarter and increasingly connected to the Internet, they become a potential vector for attackers to target.
IBM's X-Force ethical hacking team recently ran a penetration test against a group of office buildings using building automation systems that controlled sensors and thermostats.
In this particular case, a building management company operated more than 20 buildings across the United States, as well as a central server.
Without any social engineering, or online data gatheri