Did you just find a download or a file on your computer that is digitally signed by THEGRIDEON LTD? If that's the case, please read on.
You'll typically see THEGRIDEON LTD when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the THEGRIDEON LTD certificate with the following procedure:
Here is a screenshot of a file that has been signed by THEGRIDEON LTD:

As you can see in the screencap above, the Windows OS states that "This digital signature is OK". This means that the file has been published by THEGRIDEON LTD and that no one has tampered with the file.
If you click the View Certificate button shown in the screengrab above, you can view all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, etc. You can also examine the address for THEGRIDEON LTD, such as the street name, city and country.
COMODO RSA Code Signing CA has issued the THEGRIDEON LTD certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the THEGRIDEON LTD files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/56 | opsetup.exe |
| 0/58 | edsetup.exe |
The detection percentage is based on the fact that I've collected 114 scan results for the THEGRIDEON LTD files. 0 of these scan results came up with some sort of detection. You can view the full details of the scan reports by examining the files listed above.
The analysis is done on certificates with the following serial numbers: