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1、四级作文1.CyberCrimes Nowadayscybercriminalsseemtobeeverywhere,withafewclicks,committingallkindsofcybercrimes.Toillustrate,somecommitfraudorliftintellectualproperty.Otherssubvertdeals,snatchpasswordsordisrupte-commerce.Stillothersunleashvirusestocrashcomputers.Asaresult,thesehackers
2、doagreatdamagetocompaniesandcomputerusers,causingcomputerlossesupto10billiondollarsperyear. Naturally,therearemanycausesforthecybercrimes.Inadditiontothewickednatureofthehackers,thefrailtiesofInternetpartiallynourishthecrimes.JustbecausethereareholesinInternet,thecomplexsoftware
3、isbuggyandofteninfested,thecybervandalscanfindouttheweaknessintheWebsitesoftwareprogramsandIVmanipulatingsoftwareglitches,gainaccesstoWebsite,committingallkindsofcrimes. However,weshouldn'ttoleratethesecybercriminalsanymore.Andit'shightimeforustotakealltheeffectivestepstobattlet
4、hecybercrooks.FirstweshouldreinforcethecyberlawstoprotecttheWeb,thepowerfulengineofeconomy.Besides,weshouldusehightechniquestoimproveintrusiondetection,encryptionandcomputersecurity.Finally,weshouldtrainmoretalentedpeopletobuildupmorefirewallssoastomakethenetimmunetoallkindsofviru
5、sesandunalienabletoallkindsofcybercriminals.1．网上犯罪的形式很多，如…withafewclicks点击鼠标subvertdeals破坏交易snatchpasswords窃取密码unleashviruses释放电脑病毒2．网上犯罪的根源wickednatureofthehackersfrailtiesofInternet3．如何打击网上犯罪现象reinforcethecyberlawshightechniquestrainmoretalentedpeoplecybercrime网上犯罪cybercriminal网
6、上罪犯cybervandal网上恶棍cyberthieves网上盗贼liftintellectualproperty窃取知识产权infest侵扰gainaccessto进入，入网infest侵扰buggy染上病毒的2.ShoppingontheInternet(网上购物)WiththedevelopmentoftheInternetandthepopularizationofcomputers,shoppingontheInternethasbecomeacommonplaceinourlife.Hereconsumerscanbuyalmostevery
7、thingtheyneed. ShoppingontheInternethasalotofadvantages,ofwhichthemostimportantisperhapsitsconvenience.Peopledon'thavetowastealotoftheirenergyandprecioustimetogofromoneshoptoanothertochoosethecommoditiestheylike.Thisisespeciallydesirabletotheold,thesickandthebusypeoplewhocannotg
8、ototheshopsinperson.Thegoodscomei
