Chapter 5. Blinkenlights

Where we conclude that pretty can also be deadly, and we learn to read from LEDs

The first part of this book focused on various problems related to the design of the data entry point system. Those problems were limited to deducing input by observing seemingly unrelated behavioral patterns by a user with local access to a system. But as information moves farther down its path to the addressee and leaves this system, its exposure broadens, and problems become more tangible.

The second part of this book focuses on some of the problems that occur while the data remains within reach, but just after it leaves the originating system-—moments before it enters the Internet. The exposure discussed here is limited to roughly the physical ...

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