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1、1CybercrimeDecisionGroup/CEOCasperKanChangChang_kan@decision.com.tw2TwoMajorcategoriesofCybercrimeReconstructablenetworkPacketNon-ReconstructableNetworkPacketTraditionalcrimescommittedviaInternet.Examples:InternetAuctionfraud,traffickingincontrabandgoods,Internetsexual
2、assault,internet-advertisingbankloansfraudCrimescommittedviainternetExamples:SpreadingVirus,Hacking,IllegalAccess,Illegalinterception,DataInterferenceandcommunicationInterference.Evidencefrom…Crimeoperationmethods…NetworkPacket3CybercrimeInvestigationStepsTaskForceTeam
3、TechnicalsupportisrequestedandthelevelisdeterminedaccordingtothecasecontentsAninitialcomplaintisreceivedandbackgroundintelligenceinformation checksarecompleted4CaseStudyofCybercrimeCrimeTimeCrimelocationCorpusdelictiCrimemethodPerpetratorAnalysisCriminaldamageCriminalc
4、hargesSearchEvidenceCollectionInternetInterceptionSeizureCompleteForensicanalysisandinterprettheevidencefoundforlegal/courtroomsetting5CollectionofCyberCrimeInformationComputerAuditRecordCollection:TocollecttheloginauditrecordsofthevictimincludingDNS,IP,Accountdetails,
5、MACandlocaltimesetc..UserLogincredentialauthentication:Tocheckuser’slogincredentialsincludinguseraccount,name,address,phoneetc..Toobtainthecomputercommunicationrecordandcontents:includingE-mail,IMchat,webbrowsingandfiletransfersetc..Suspectsstatements:criminaloffenceet
6、cTheseizureofthesuspect’scomputerauditrecords:Web,IP,account,MACandtimeetcEmailMSNFTPURLTimeIPMacAccount6Internetadvertisingbankloanfraudcase-1InMay2009KCGPB(KaohsiungCityGovernmentPoliceBureau)announcedthattheyhadreceivedanumberofbankreportsallegingforgeddocumentsfrau
7、dulentlyrepresentingbidsforcredit.Thisresultedinbankloanfraudswithhugefinanciallosses.Anin-depthinvestigationrevealedthattheoffendersfloodedxxshareswithotherstoformthefraudgroup.Theyusedadomesticportalwebsiteforfreewebspacetofalselypostorstickeradvertisingpublishedinth
8、eOfficeofcreditandinformation.Thiswasdonetoattractthemuch-neededcashflowoftheheadcustomer.ThemembersoftheGroupforgedt
