Every Computer Virus Explained! Part 2.

KeyloggernKeylogger is malware that secretly records keynvictim's keyboard.nKeyloggernWhen a maliciousnAD is placednON A POPULARnONLINE SHOPPING SITEnCLICKS ON THE ADnA KEY LOGGERnGETS INSTALLED WITHOUTnTHE USER KNOWINGnAS THE USERnTYPES THEIR LOGIN CREDENTIALSnCREDIT CARD ANDnTHE KEY LOGGERnRECORDS EVERYTHINGnLogic BombnLogic Bomb isnMALWARE THAT REMAINSnDORMANT IN A SYSTEMnUNTIL TRIGGERED BYnA SPECIFIC EVENTnIT CAN BEnA SPECIFIC DATEnUSER ACTION ORnEVEN AN UPDATEnONCE ACTIVATED AnDISABLE SECURITY MEASURESnTO DELETE FILESnOR CORRUPT THE DATAnIT DOES NOTnSPAWN LIKE A WORMnBUT IS INTENTIONALLY PLANTED INSIDE SOFTWAREnOR FILESnOFTEN BY ANnINSIDER LET'S SAYnMEMBER THAT GOT FIREDnWILL PROGRAM LOGICnBOMBS TO DELETEnCOMPANY DATA ASnA FORM OF REVENGEnMalvertisingnMALVERTISING MALVERTISING ISnMALWARE IN THEnFORM OF ADVERTISEMENTnAN EXAMPLE OFnMALVERTISING IS FAKEnANTIVIRUS ADSnYOU VISIT AnLEGITIMATE WEBSITEnBUT SUDDENLY AnFAKE AD BANNERnTHAT GOT SNEAKEDnIN BY HACKERSnGIVING WARNINGS LIKEnYOUR PC IS INFECTEDnSO THEY TOLDnOR DOWNLOAD THE ANTIVIRUSnIF YOU CLICKnA MALICIOUS SITEnTHAT INSTALLS MALICIOUS SOFTWAREnINSTEAD OF REALnSECURITY SOFTWAREnWIPERnWIPER A WIPERnOF MALWAREnDESIGNED TO PERMANENTLYnHARD DRIVESnOR EVEN DISABLEnENTIRE SYSTEMSnIT TYPICALLY SPREADSnTHROUGH PHISHING EMAILSnOR MALICIOUS SOFTWARE UPDATESnIMAGINE A CYBERnWARFARE ATTACK ONnA BANKnA HACKER GROUP MIGHT DEPLOY AnWIPER DISGUISED ASnA ROUTINE UPDATEnWIPER ACTIVATEDnERASES TRANSACTION RECORDSnCUSTOMER DATA ANDnCORRUPTS BACKUP SERVERSnIF THERE'S NO WAY TO RESTOREnCUSTOMERS LOSE TRUSTnAND THE BANKnSUFFERS IRREVERSIBLE DAMAGEnADWAREnADWARE ISnA TYPE OFnMALWARE THAT FORCESnUNWANTED POP UPSnOR AD BANNERSnWHILE THEY AREnBROWSING THE WEB OR USING SOFTWAREnWHILE NOT ASnHARMFUL COMPARED TO MALVERTISINGnIT CAN BEnEXTREMELY INTRUSIVE ANDnSLOW DOWN SYSTEM PERFORMANCEnBECAUSE A USERnDOWNLOADED A FREEnVIDEO EDITING APPnWEBSITE ONCE INSTALLEDnTHE APP ALSO INSTALLS ADWAREnTHAT BOMBARDS THEnUSER WITH ANNOYING POP UP ADSnWHILE THEY TRYnSPYWAREnSPYWARE ISnDESIGNED TO SECRETLYnMONITOR AND COLLECTnINFORMATION ABOUT AnWITHOUT THEM KNOWINGnIT WORKS ISnSIMILAR TO REMOTEnACCESS TROJANnBUT NOT TOnTHEY CAN CONTROL EVERYTHINGnJUST SPYING ONnYOUR SCREEN ANDnSELL YOUR DATAnRAM ScrappernRAM SCRAPPER MALWAREnTARGETS THE COMPUTER'SnRAM TO STEALnSENSITIVE INFORMATIONnLIKE CREDIT CARDnNUMBERS OR LOGIN CREDENTIALSnWHILE THEY AREnMEMORY DURING TRANSACTIONSnRAM SCRAPERS ARE COMMONLY FOUND INnPOINT OF SALE SYSTEMSnWHERE THEY CAN CAPTURE PAYMENT INFORMATIONnTO A VULNERABLE CONNECTIONnROOTKITnROOTKITnIS A TYPEnOF MALWARE DESIGNED TO HIDE ITSnPRESENCE ON A COMPUTERnAND CAN ACCESSnEVERYTHING ONCE INSTALLEDnEVERYTHING ONCE INSTALLEDnCONCEAL OTHER MALWAREnSUCH AS VIRUSESnFROM ANTIVIRUS SOFTWAREnAND ROOT KITSnCAN BE EXTREMELYnDIFFICULT TO REMOVEnBECAUSE THEY OFTENnRESIDE IN THE KERNELnTHE CORE PARTnOF THE OPERATING SYSTEM THAT HASnTHE HIGHEST LEVEL OF CONTROLnIN EXTREME CASESnREINSTALLING THE ENTIREnOPERATING SYSTEM ISnTHE ONLY WAY TO FIX THISnBACKDOORnBACKDOORnIS A TYPEnOF MALWARE THAT PROVIDES UNAUTHORIZED ACCESSnTO A COMPUTERnOR NETWORKnBYPASSING AUTHENTICATION PROCEDURESnLIKE PASSWORDS WITHOUT THE USER KNOWING ITnBACKDOOR IS USUALLYnINSTALLED THROUGH AnTROJAN HORSEnAND THIS ISnHOW A HACKER PUTS ANOTHER MALWAREnIN WITHOUT THOSEnSHADY WEBSITES ORnINFECTED USB DRIVESnBOTNETnBOTNET A BOTNETnOFTEN CALLED ZOMBIESnIS A NETWORKnOF INFECTED COMPUTERSnCONTROLLED REMOTELY BYnA HACKERnTHE HACKER MIGHTnUSE A BOTNETnTO FLOOD AnWEBSITE WITH TRAFFICnBY SPAMMING THOUSANDSnOF EMAILSnCAUSING IT TOnCRASHnTHE HACKER ACHIEVESnTHIS BY CONTROLLINGnTHOUSANDS OF INFECTED COMPUTERSnAROUND THE WORLDnALL ACTING IN UNISONnAND THE DEVICEnOWNERS REMAIN UNAWAREnOF THE BOTNET ATTACKnFileless MalwarenFILELESS MALWAREnIS A TYPEnOF MALWARE THAT DOESN'T RELY ONnINFECT A SYSTEMnINSTEAD IT RUNSnDIRECTLY ON RAMnTO STEAL YOUR DATAnAND LEAVE ANY TRACEnON THE HARD DRIVEnANTIVIRUS SOFTWARE STRUGGLEnTO DETECT ITnTHIS MALWARE CANnCOME FROM PHISHINGnEMAILS OR EXPLOITINGnSYSTEM VULNERABILITIESnAND IT'S ALSOnGONE JUST LIKE THATnAFTER THE COMPUTER GOT REBOOTEDnMalicious MacronMALICIOUS MACRO ISnA HARMFUL SCRIPT EMBEDDED IN DOCUMENTSnOFTEN MICROSOFT WORDnOR EXCEL FILESnTHAT RUNS WHENnMACROS ARE ENABLEDnMACROS ARE NORMALLYnUSED FOR AUTOMATING TASKSnBUT HACKERS EXPLOITnMALWARE INSIDEnVICTIMS USUALLY RECEIVEnTHESE INFECTED FILESnTHROUGH PHISHING INVOICESnOR OFFICIAL REPORTSnONCE OPENED ANDnMACROS ARE ENABLEDnIT DOWNLOADS ADDITIONALnMALWARE LIKE RANSOMWARE