  Smart Buildings are networks of connected devices and software in charge of
automatically managing and controlling several building functions such as HVAC,
fire alarms, lighting, shading and more. These systems evolved from mostly
electronic and mechanical elements to complex systems relying on IT and
wireless technologies and networks. This exposes smart buildings to new risks
and threats that need to be enumerated and addressed. Research efforts have
been done in several areas related to security in smart buildings but a clear
overview of the research field is missing. In this paper, we present the
results of a systematic literature review that provides a thorough
understanding of the state of the art in research on the security of smart
buildings. We found that the field of smart buildings security is growing
significantly in complexity due to the many protocols introduced recently and
that the research community is already studying. We also found an important
lack of empirical evaluations, though evaluations on testbeds and real systems
seems to be growing. Finally, we found an almost complete lack of consideration
of non-technical aspects, such as social, organisational, and human factors,
which are crucial in this type of systems, where ownership and liability is not
always clear.
