double extension

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double extension

A way to trick users into opening a virus. Many people have learned that text files (.TXT) and image files (.GIF, .JPG, etc.) are safe to launch because they are data and not executable software. They have learned to be leery of .EXE, .VBS and other extensions that are executed immediately. Thus, virus writers try to trick more people using double extensions, so "I LOVE YOU.TXT.vbs" is really not a .TXT file, but a .vbs file, a Visual Basic Script that is executed immediately.

You Need to See the Extension
Some mail programs may actually remove the .vbs at the end of the name, leaving users completely helpless to make a determination even if they knew what to look for. This mentality is pervasive. Out of the box, Windows defaults to hiding file extensions in all displays, which is beyond absurdity considering the importance of this file identifier in everyday operations. See dangerous extensions and Love bug.

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No references found			NEVER trust a file with a double extension - it goes against Nature. Fourteen Household Solution to Protect Your Computer from Viruses by anil wadhwa / Internet and Businesses Online community Connacht manager Tim Allnutt said that the double extension was a huge boost. BOOST FOR CONNACHT by The Mirror (London, England) The payload routine comprises of sending itself from infected machines as an attached file with a variable name and double extension (eg filename. New 'variable' worm found in wild by Internet Business News			double crossover double cusp double data rate Double Data Rate Random Access Memory Double Data Rate Synchronous Random Access Memory double decker double DECkers double decomposition double density double diffusion double diode double distribution Double Ditch State Historic Site double dome double door double dot halftone double drift double drill column double eaves course double ebb double egress frame double electron excitation double ender double entendre double exposure double extension double feathering Double Fertilization double Flemish bond double floor double format pavior double framing double frequency shift keying double glazing double glue-down double group double header double headings double Hooke's joint double house double image double impeller breaker double integral double jack double jack rafter double jacking double jeopardy double junction double knit double L stair double lancet window			Double entendré Double entendré Double entendres Double entendres double entry double entry double entry Double entry accounting Double entry accounting Double entry accounting system Double Entry Based Transaction System Double entry bookkeeping Double entry bookkeeping Double Entry Journal Double envelopment Double Error Correcting, Triple Error Detecting Double Error Detection double escrow Double Even Pass Odd Double Excitations In Configuration Interaction Double Execution, Message Checksums Double Exponential Jump-Diffusion Double Exposure Double Exposure Double Exposure Double Exposure Double Exposure double exposures double exposures Double Extended Three Letter Acronym double extension Double Extra Heavy Double Extra Large Double eyelid Double eyelid Double eyelid Double Fanucci double fault double faults double feathering double feature double feature double features Double Feeder Double Fence Intercomparison Reference Double fertilisation double fertilization double fertilization Double Fifth double figure Double Filtration Plasma Pheresis Double Fine Action Comics double first double firsts Double Fisted Sailing Club Double Fixed Pulley Double Fixed-Polarity Reed-Muller Double Flag

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