. What are the risks and issues in system availability? Indicate possible controls to mitigate the risks.

The following are some typical risks:

• Unauthorized access to the system leads to system intrusion and data corruption.
• The more complicated the system, the longer it takes to restart it. Hence, outages that require system shutdown and restart can dramatically affect your ability to meet a challenging availability target.
• A support person who is called in afterhours could easily take an hour or two simply to arrive to diagnose the problem.
• Unsuspecting users opening e-mails that appear genuine and without viruses