ESNOWUN.dll is a Spyware.eSpyNow. ESNOWUN.dll monitors user Internet activity and private information. It sends stolen data to a hacker site. Related files: %UserProfile%\Desktop\espynow.exe %System%\eSpyNow-v2.0\ESNOWUN.dll More info: http://securityresponse.symantec.com/avc... Removal: Remove ESNOWUN.dll from Windows startup using antivirus (also check How To Remove section)Startup Optimizer.