"Withoutcybersecurity,therewouldbenonationalsecurity".Facingtherealitythatsoftwareandhardwarevulnerabilitiesareinevitableandattackswithunknownpatternsareunavoidable,traditionaldefenseisinsufficient.Thisbookintroducesthecoreideas,defensemodelandframeworkofthebuilt-inactivedefense.Itstartsbyanalyzingtheinherentattackmechanismsandattackpathsandfindingsecurityweaknessesexploitedbyattackers.Itthen,withthesecurityrequirementsbeingaprimarydesignconsideration,redesignsandtransformsexistingtechnologiessuchthattheyareabletoeffectivelysuppress,detect,contain,andeliminatesecuritythreatscausedbytheirinternalvulnerabilities.Thebuilt-inactivedefensemakessystematicbreakthroughsintheoveralldefensestrategy,movingfromexternaltobuilt-in,andfromreactivetoproactive.Itessentiallychanges"informationtechnologywithsecurityenhancements"to"secureinformationtechnology".Ithasgreatpracticalsignificance,broadscientificandtechnologicalimportance,andprofoundstrategicinfluence.

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