  Smart environments integrate Information and Communication Technologies (ICT)
into devices, vehicles, buildings and cities to offer an increased quality of
life, energy efficiency and economical sustainability. In this perspective, the
individual has a core role and so has networking, which enables such entities
to cooperate. However, the huge amount of sensitive data, social aspects and
the mixed set of protocols offer many opportunities to inject hazards,
exfiltrate information, mass profiling of citizens, or produce a new wave of
attacks. This work reviews the major risks arising from the usage of
ICT-techniques for smart environments, with emphasis on networking. Its main
contribution is to explain the role of different stakeholders for causing a
lack of security and to envision future threats by considering human aspects.
