网084蒋超英1语论文

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1、湖南软件职业学院计算机专业英语（论文）AbstractComputerNetworkSecurityTheoryandPracticeintroducestothereaderacompleteandconciseviewofnetworksecurity.Itprovidesin-depththeoreticalcoverageofrecentadvancementsandpracticalsolutionstonetworksecuritythreats.Thisbookcanbeusedforaone-semesternetworksecuritycourseforgra

2、duateandupper-levelundergraduatestudents,aswellasareferenceforITprofessionals.6湖南软件职业学院计算机专业英语（论文）ComputerSecurityI.ThreatstoComputerSecurity   Threatstocomputersecurityarecomputercrimes（includingvirusesandelectronicbreak-ins）andnaturalandotherhazards.   1.ComputerCriminalsAcomputercrimeisan

3、illegalactioninwhichtheperpetratorusesspecialknowledgeofcomputertechnology.Computercriminalsareoffourtypes:   （1）EmployeesThelargestcategoryofcomputercriminalsconsistsofthosewiththeeasiestaccesstocomputers-namely,employees.Sometimestheemployeeissimplytryingtostealsomethingfromtheemployer-equ

4、ipment,software,electronicfunds,proprietaryinformation,orcomputertime.   Sometimestheemployeemaybeactingoutofresentmentandistryingtogetbackatthecompany.   （2）OutsideUsersNotonlyemployeesbutalsosomesuppliersorclientsmayhaveaccesstoacompany'scomputersystem.Examplesarebankcustomerswhouseanautom

5、atictellermachine.Likeemployees,theseauthorizedusersmayobtainconfidentialpasswordsorfindotherwaysofcommittingcomputercrimes.   （3）“Hackers”and“Crackers”   Somepeoplethinkofthesetwogroupsasbeingthesame,buttheyarenot.Hackersarepeoplewhogainunauthorizedaccesstoacomputersystemforthefunandchallen

6、geofit.Crackersdothesamethingbutformaliciouspurposes.Theymayintendtosteal6湖南软件职业学院计算机专业英语（论文）technicalinformationortointroducewhattheycalla“bomb”-adestructivecomputerprogram-intothesystem.   （4）OrganizedCrimeOrganizedcrimehasdiscoveredthatcomputerscanbeusedjustlikelegitimatebusinesspeopleuse

7、them,butforillegalpurposes.Forexample,computersareusefulforkeepingtrackofstolengoodsorillegalgamblingdebts.Inaddition,counterfeitersandforgersusemicrocomputersandprinterstoproducesophisticated-lookingdocumentssuchaschecksanddriver'slicenses.II.Comp