PCS 7 Flashcards

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Embedded systems

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An embedded computer is usually a fairly simple computer, often on a single printed circuit board, responsible for a dedicated task.

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Example of an embedded system

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Traffic lights are an example of an embedded system. The controller is usually out of sight but has parts that switch the lights, keep track of time in each state, receive input from the pedestrian button, and receive input from road sensors.

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Characteristics of an embedded system

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Task specific (single purpose), low power consumption, small physical size, low maintenance, low cost, often real-time or responsive to their environment.

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The Internet of Things (IoT)

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The Internet of Things (IoT) refers to everyday devices that are increasingly being given network connectivity.

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Most IoT devices characteristics

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Most IoT devices are low-powered, have reduced memory, and a slow processor that accomplishes a single task.

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Data usefulness in IoT

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For the data generated by IoT devices to be useful, it must be passed on to a platform that can store and analyze it.

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The more devices we have, the more attack vectors hackers have to access networks and data.

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Increased number of devices in homes, offices, and public spaces provide more opportunities for hackers to exploit networks and data.

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Packet sniffing

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Accessing unsecured wireless traffic to potentially obtain sensitive data.

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Hijacking and ransomware

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Security threats involving unauthorized control and demands for payment to restore access.

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Home invasion through IoT

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Compromised IoT home security systems could make it easy for people to break in.