Did you just find a file that has been digitally signed by Grand Media Ltd? If so, please read on.
You will typically notice Grand Media Ltd when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the digital signature details for Grand Media Ltd with the following steps:
Here's a screenshot of a file digitally signed by Grand Media Ltd:

As you can see in the screencap above, the Windows OS states that "This digital signature is OK". This implies that the file has been published by Grand Media Ltd and that no one has tampered with the file.
If you click the View Certificate button shown in the screencap above, you can examine all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, and so on. You can also view the address for Grand Media Ltd, such as the street name, city and country.
DigiCert EV Code Signing CA has issued the Grand Media Ltd certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Grand Media Ltd files I have collected, thanks to the FreeFixer users.Unfortunately I don't have any scan result from VirusTotal available for the Grand Media Ltd files at the moment. The scan results will appear here as soon as a FreeFixer user uploads a file digitally signed by Grand Media Ltd.
| Detection Ratio | File Name |
|---|---|
| Not available | dew_svc.exe |
The analysis is done on certificates with the following serial numbers: