المصدر الاول لتقارير المرحلة الرابعة

Security is the sum of all measures taken to prevent loss of any kind. Loss
can occur because of user error, defects in code, malicious acts, hardware
failure, and acts of nature. With holistic computer security, a number of
methods are used to prevent these events, but it’s primarily focused on
Preventing user error and malicious acts. Security is the antithesis of
convenience—generally, the more secure something is, the less convenient it
is. Think about this in the context of your life: think of how easy it would be
if you could just walk up and push a button to start your car without
worrying about keys—or paying for car insurance. But the risk of theft and
accidents makes these two security measures mandatory. Meanwhile,
advanced technology like remote key fobs for cars is making automotive
3
security easier, just as biometric scanners can make logging on to computers
both more secure and less annoying at the same time. Computer security is
not complicated. It may seem that way, but the theory behind computer
security is relatively simple. Hacking methods fall into just a few categories.
And solutions to computer security problems are actually rather
straightforward.
2- Why Computers Aren’t Secure:
Most people question why computers are so insecure—after all, people have
been hacking for a long time. The vast majority of hacking incidents occur
because of one of the following pervasive problems: