Did you just run into a file that is digitally signed by GreenSearchSecurity? If that's the case, please read on.
You will typically see GreenSearchSecurity when double-clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screencap shows:

You can view additional details from the GreenSearchSecurity certificate with the following steps:
Here is a screenshot of a file that has been signed by GreenSearchSecurity:

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This implies that the file has been published by GreenSearchSecurity and that the file has not been tampered with.
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 see the address for GreenSearchSecurity, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the GreenSearchSecurity certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the GreenSearchSecurity files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/54 | internetHelper_antiphishingb.exe |
| 0/57 | Panda_URL_Filteringb.exe |
| 0/57 | panda_url_filtering.dll |
| 0/57 | internethelper_antiphishingb.exe |
| 0/53 | internetHelper_antiphishing.exe |
| 0/57 | Panda_URL_Filteringb.exe |
| 0/56 | Au_.exe |
The detection percentage is based on the fact that I have gathered 391 scan reports for the GreenSearchSecurity files. 0 of these scan results came up with some sort of detection. If you like, you can review the full details of the scan reports by examining the files listed above.
The analysis is done on certificates with the following serial numbers: