BACS are used for coordinated control of building services systems across multiple areas. Inadequate planning of BACS can thus lead to damage to property or assets and, in the worst case, to personal injury.

In one example, the central control system of a single access entry control system could fail due to insufficient redundancy planning and people could be trapped in an airlock.

The threat landscape in this regard is also exacerbated in BACS by the complexity of the required planning. Here, heterogeneous groups of building services systems (trades) and the multitude of different service providers and BACS areas have to be taken into account.