Cyber security is the most important issue facing the industry and business because the financial consequences can be catastrophic. Cyber attack compromises business security and takes over control of the business operation.  To manage facilities operation located in different countries on the globe in real-time the systems must be interconnected through the Internet networks. The building's assets and data are the most valuable for business operations. Possible disruptions in lighting, or HVAC systems can affect the facility's safety and business operation. 

Many cyber professionals say: It is not if an attack will happen; it is only when.

The possible scenario: if a building's automation system is compromised, the results are: the building's sprinklers and smoke alarms are to fail when called to act, building the elevators are disabled that resulting in serious financial consequences or fatalities. The failure of the HVAC system can rise a building temperature, disrupt the cooling server room that can damage all IT equipment, and even starts a fire. The BAS controls the access to employees' and customers' records, hackers can copy or erase all data, and take control of the facility's operation. Compromise of customers’ personal information would have negative publicity, which would lead to loss of customers and potential lawsuits. The basics cyber security requirements are password access and firewalls. Successful cyber security involves multiple paths of defense and layers of protection like implementing various devices and systems across a building network.  High security is the result of business team work: the IT people, system integrators, managers and employees.