Name one thing you know firsthand is connected to the Internet and could result in casualties if attacked. Sure banks computers could crash, sure amazon could go down, but ICBMs are not going to launch and the power grid wont go down. If anything that could actually cause casualties is connected to the Internet then it shouldn't be.
SCADA (Supervisory Control and Data Acquisition) technology provides the means to monitor and control distributed systems from a central location. They are used widely in the telecommunications, power distribution, oil & gas and transportation industries. SCADA systems are typically deployed with dedicated communication infrastructure, proprietary software and hardware.
iSCADA, on the other hand is an Internet-based SCADA solution that utilizes the public Internet infrastructure as the data communication medium. It uniquely combines traditional SCADA technology with the open data communication protocols, services and data formats of the public Internet to deliver cost-effective and easy-to-use SCADA solutions. With iSCADA, it is now feasible to monitor and control virtually anything from anywhere in the world.
This kind of stuff is getting deployed more and more.