Energy control systems are the brains that operate and monitor our energy infrastructure. Two examples of such systems are the Supervisory Control and Data Acquisition (SCADA) and the Distributed Control Systems (DCS). Most early SCADA system designs did not anticipate the security threats posed by today’s reliance on common software and operating systems, public telecommunication networks, and the Internet. Control systems have become more productive and efficient, but the energy sector is faced with an unprecedented challenge in protecting systems against cyber assault. 

Ransomware attacks have been on the News, you are required to investigate how often this attack disrupt industries, especially in the Supervisory Control and Data Acquisition. Then, using the frequencies of occurrence in the SCADA, hypnotized the probability of ransomware attacks in the SCADA industries in a single year.

• Define business rules for a company that sells t-shirts online. There are many customers buying many different t-shirts in many differnt sizes and styles.  Define at least 6 business rules with respect to entity classes and their relationships for this business. Then draw an E-R diagram based on the 6+ rules defined.