maintaining defender's reputation in anomaly detection against insider attacks

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1、IEEETRANSACTIONSONSYSTEMS,MAN,ANDCYBERNETICSPARTB:CYBERNETICS,VOL.40,NO.3,JUNE2010597MaintainingDefendersReputationinAnomalyDetectionAgainstInsiderAttacksNanZhang,WeiYu,XinwenFu,andSajalK.DasAbstractWeaddressissuesrelatedtoestablishingadefendersexistingresearchbelongstothiscategory.Unfortunately,the

2、reputationinanomalydetectionagainsttwotypesofattackers:stateoftheartcannotyetprovideasatisfiablesolution[3][5].1)smartinsiders,wholearnfromhistoricattacksandadapttheirTheotherapproachisnottorevisetheexistinganomalyde-strategiestoavoiddetection/punishment,and2)naïveattackers,tectiontechniquesbuttobuil

3、duponthemnovelgame-theoreticwhoblindlylaunchtheirattackswithoutknowledgeofthehistory.techniquestoexploittheweaknessoftheobjectiveofinsideInthispaper,weproposetwonovelalgorithmsforreputationestablishmentoneforsystemssolelyconsistingofsmartinsidersattackers[6],particularlythefearofdetection.Wefocusont

4、hisandtheotherforsystemsinwhichbothsmartinsidersandnaïveapproachinthispaper.attackersarepresent.ThetheoreticalanalysisandperformanceSignificantresearchhasbeendoneonthegame-theoreticevaluationshowthatourreputation-establishmentalgorithmsmodelingofintrusiondetectionandnetworksecuritysystemscansignifican

5、tlyimprovetheperformanceofanomalydetection[6][12].Ithasfrequentlybeenobservedthatanattackersagainstinsiderattacksintermsofthetradeoffbetweendetectionstrategydependsonnotonlyitsownobjectivebutalsotheandfalsepositives.toughnessofthedefender(i.e.,thedefenderswillingnessIndexTermsAnomalydetection,gameth

6、eory,insiderattack.toenforcesecurity,evenattheexpenseoffalsepositives).However,tothebestofourknowledge,meagerattentionhasI.INTRODUCTIONbeenpaidontheestablishmentandmaintenanceofadefendersreputationoftoughnesstoforcetheattackerstoabandontheirNSIDERattacksarelaunchedbymalicioususerswhoareattacks.Tradi

7、tionally,thereputationconceptwasintroducedIentrustedwithauthorized(i.e.,insider)accessofasystem.tomodelthetrustworthinessofasuspiciousparty(fromtheFromstealingcorporatedatatopropagatingmalware,itisper