COSService.exe is part of a product called known as Comodo Online Storage Cloud and the developer is Comodo Security Solutions .
If you think that this file contains a virus or another malware, please download a virus scanner.
If COSService.exe is using too much CPU or too much memory in your system, it is possible that your file has been infected with a virus. Installing an antivirus is recommended.
Not all processes can be uninstalled without the help of a 3rd party tool, especially malware. To see if it can be uninstalled, first go to Start > Control Panel > Add/Remove programs and select Comodo Online Storage Cloud from the list to remove the process COSService.exe from your computer.
If you have any problems with COSService.exe, you may try using a registry cleaner or a speed-up software to check, analyze, and fix problems that are affecting the performance of your computer.
You may try contacting Comodo Security Solutions, the developer of COSService.exe and ask for more information.