Remove the spaces from the following sentence: Program Modification: Sometimes, not only virus TrojanDownloader:Win32/Bagle.WY or malware TOPOPTIMIZER but also common softwares possessing the ability to modify the inner functions of vwififlt.sys, which means other programs can't find this DLL file again.
ProgramModification:Sometimes,notonlyvirusTrojanDownloader:Win32/Bagle.WYormalwareTOPOPTIMIZERbutalsocommonsoftwarespossessingtheabilitytomodifytheinnerfunctionsofvwififlt.sys,whichmeansotherprogramscan'tfindthisDLLfileagain.