INFORMATION SECURITY —–
1o Goals of information security
role of cyber security
why need security
Elements of information security—–
confidentiallty —
how to check confidentiallty?
Integrity—
how to check Integrity?
Availlability–
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Authenticity–
Ensure the quality of being genuine?
checksum
Non repudiation–
when send msg put security code,insure message cannot deny,receive orginal msg send by sender
http–https
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the security,functionality,and usability triangle
functionality one level
suppose you send msg to your friend,when you enter with msg one functionality(program) add with feature
usabitity second level
given function how to used in gui interface or cli interface
security third level
restrictions you send msg intend your friends only receive,don.t intercept other add security
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Information security threat—-