What are definitions of liability and reliability for an information systems professional?

This assignment will be 3 separated pages it all about the same topic
“ Information & Information System Security & Safety, Liability and Reliability issues“
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+What does “security” denote and connote?
+Why is security such a big deal?
+What are definitions of liability and reliability for an information systems professional?
+What is the global aspect of this topic? What is the economic aspect of the topic? What is the social aspect of this topic? What is the ethical aspect of this topic?
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