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    ;reacomputernet—

    ;liketryingtosecure

    ;echallengeistrying

    ;realthreatswithout

    ;impedingthenormaltrafficthatneedstogo ;inandout.

    ;Andastherecenthackingattacks

    ;againstCitigroup.RSASecurityandLock- ;heedMartinshow,evensophisticatedsecu—

    ;ritysystemscanbebreached.

    ;“W’reseeinganinilectionpointwhere

    ;theattackersareextremelysmart,andthey ;areusingcompletelynewtechniques,”said

    ;NirZuk.thechieftechnologyof}iceratPalo ;A1toNetworks.afirewallcompanybasedin ;SantaClara,Cali~”Everypieceofcontent

;thatyoureceivecanattackyou.’’

    ;Historically,thefirstlineofcomputer ;defense,thefirewall,is1iketheguarddeskat ;abuilding.Itscrutinizesthetrafficgoingin ;andoutofthesystem,lookingforobviously ;suspiciouscharacters.

    ;Virtuallyeverycompanyalsohasan—

    ;tivirussoftware,whichtypicallykeepsan ;eyeoutforanythingona”blacklist”ofwell-

    ;knownmalwareandpreventsitfromenter- ;mgthecomputersysternorcausinghavoc ;onceinside.Amoreraretypeofsecurity ;grantsaccessonlytoprogramsona”white

    ;Iist”ofsafesoftware.theequivalentofal—

    ;lowingemployeeswithIDcardstocome ;andgoastheypleasebutpreventmganyone ;elsefromentering.

    ;Butashackersunleashever—sneakier

    ;attacks,bigcorporationsandgovernment ;agenciesarescramblingtodeploynewtools ;andprocedurestodealwithallthedelicate ;grayareasinbetween,thecool-lookingnew

    ;smartphoneapp,thefunnyFacebooklink, ;theunknownforeignWlebsite.Theflood ;ofmalicioussoftwareisalsoprompting ;reneweddebateoverhowtobalanceaccess ;andprotection.

    ;“Rightnow,ifanapplicationisnot

    ;known,weletitrun,”saidPeterFirstbrook,

    ;ananalystatGartner,aresearchfirm.refe卜

    ;ringtotheprevailingviewinmostcompa—

    ;nies.”1hat’sthewrongthingtodo.”

    ;CompanieslikeSymantec,thegiant ;Internetsecurityfirm,areintroducingser- ;vicesthatassessthe”reputation”ofsofhare.

    ;weighingfactorslikehowolditisandhow ;widelyitisusedtodecideifitissafe.Other ;vendorsaresellingenhancedfirewallsand ;productsthatcansniffoutimpersonatorsby ;detectingunusualfile—usagepatterns.

    ;Nearlyeveryoneagreesthatamixof ;defensesisvital,andthatevenso,some ;hackerswillstil1slipthrough.Expertsalso ;saythattheproliferationofsmart-phones,

    ;thegrowingworkplaceuseofFacebookand ;othersocia1mediatools,andtheshiftto—

    ;wardstoringmoredatainacomputingcloud ;areprovidingnewavenuesforattackers. ;Symantec’schiefexecutive,Enrique

    ;Salem,acknowledgedataconferencein ;Februarythattraditionalantivirusscans ;“longagofailedtokeepup.’’Aspointsof

    ;entryintocorporateandgovernmentnet- ;works”proliferateonthisseeminglyinsane

    ;trajectory,”headded.”sodothethreatsthey

    ;attract.”

    ;Thegrowthinmalicioussoftwarehas ;beenstaggering,ascriminalorganlzatlons ;seektoferretoutcreditcardnumbersand ;otherwaystomakemoneyandhackersin ;ChinaandRussiaarebelievedtobeseeking ;nationalsecuritysecrets.

    ;LastveSymantecdiscovered286mil- ;lionnewanduniquethreatsfrommalicious ;software,oraboutninepersecond,upfrom ;240millionin2009.111ecompanysaidthatthe

    ;amountofharmfulsoftwareintheworldpassed ;theamountofbeneficialsoftwarein2007,and ;asmanyasoneofevery10downloadsfromthe ;.臃6includesharmfulprograms

    ;Somesecurityexpertssaycompanies ;canbetterprotectthemselvesagainstsuch ;attacksbyexpandingtheuseof’’white1ists.”

    ;whicharecurrentlyinplaceinonlV10to20 ;percentofthecomputersinlargeorganiza- ;tic}ns.

    ;Bit9,aMassachusettscompanythat

    ;offerssuchawhite—listservice.saysithas

    ;millionsofapprovedapplicationsinitsreg- ;istry.Federalagencies,retailers,?,allStreet

    ;firmsandtechnologycompaniesuseitsreal—

    ;timemonitoringservices,whichcanbeset ;toblockunknownsoftwareorsimplyissue ;alertsaboutit.

    ;HarrySverdlove,Bit9’schieftechnolo—

    ;gYofficer,saiditsmonitoringsystemstopped ;anattackonanationaldefense1aboratory ;inMarchthatwasalmostidenticaltothe

    ;hackingthatmonthatRSASecurity,which ;eventuallycompromisedtheelectronicsecu—

    ;ritytokensthatRSAsellstoLockheedand ;othercorporationsaroundtheworld. ;Mr.Sverdlovesaidtheattackonthe ;labcameviaane—mailattachmentwitha

    ;headingimplyingthatitwasfromthehu—

    ;manresourcesdepartment.Hesaidamall—

    ;ciousfilewasembeddedintheattachment. ;butthemonitoringsystemstoppeditwhen ;itnoticedunauthorizedactivity.(NewYork ;15;

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