Sometimes you find some unknown .exe and .dll files in your system. Or if you do full system scan, your antivirus may detect some unknown .exe and .dll files. Mot probably these unknown files are virus or malicious script. But not all process files are virus. They can be windows files or files of any software that you have installed on your system. Actually, .dll and .exe files are process files means. So, they can change the nature of your windows operating system. Before deleting any process files search on Google or Live.com for more information about those files. Open windows task manager (alt + Ctrl + Del) and click on “Process” tab. You will see many unknown .exe programs running like alg.exe, lsass.exe, cidaemon.exe etc. Some running programs may be virus, so it’s better to search on web to find more information about those files. If you are using Norton antivirus, than you may find ccapp.exe and ccsvchst.exe. Ccapp.exe is used by Norton Antivirus suit for checking emails and auto-protect facilities and ccapp.exe is Symantec Service Framework which is added automatically with Norton software installation.