Two inherent characteristics of computers that make security so difficult are:
- a computer does exactly what its programmed to do, including reveal sensitive information. Any system that can be programmed can be reprogrammed by anyone with sufficient knowledge.
- Any computer can do only what it is programmed to do. "[I]t cannot protect itself from either malfunctions or deliberate attacks unless such events have been specifically anticipated, thought through, and countered with appropriate programming".
8. Describe several different computer security techniques and explain the purpose of each.
Several different security techniques:
-passwords: if choosen carefully, passwords restrict ones access to computer systems and information.
-firewalls: keep internal networks secure while enabling communication with the rest of the internet.
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