Answer:
The most serious threat to offshore industrial systems is external access to control systems. Unwanted access to the human/machine interface (HMI) can allow third parties full control of a system. Zybersafe provides protection of the integrity of data that traverses the Ethernet connection between a company’s headquarters and a remote system.
When the email was sent as a group email
Answer:- Major property of a good hash code is that objects which are equal should return the same hash code .
Explanation: Hash codes is a numeric value which is used for identify a object while a equality testing .Hash code can occupy the value of any length and then returns a fixed length value. The value of hash codes are variable.
If two objects are equal then by the method of equal(object) if the hashcode() function is called on both the objects , they produce the same value.