dvdsdtl.dll is a Trojan.Heoms. dvdsdtl.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %System%\heomstool.exe %System%\dvdsdtl.dll %System%\vddsdls.dat %System%\vddsdls.inf %System%\otdal.ico %System%\vddsdls\dvdsdtl.dll %System%\vddsdls\vddsdls.dat Adds the value: "heomstool" = "C:\Windows\System32\heomstool.exe COPY" to the Windows startup registry keys. More info: http://securityresponse.symantec.com/avc... Removal: Remove dvdsdtl.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.