Did you just find a download or a file on your computer that has a digital signature from LG U Plus? If that's the case, please read on.
You will probably notice LG U Plus when running the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view additional details from the LG U Plus certificate with the following procedure:
Here's a screenshot of a file that has been digitally signed by LG U Plus:

As you can see in the screenshot above, Windows reports that "This digital signature is OK". This means that the file has been published by LG U Plus and that the file has not been tampered with.
If you click the View Certificate button shown in the screenshot above, you can see 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 examine the address for LG U Plus, such as the street name, city and country.
Thawte Code Signing CA - G2 has issued the LG U Plus certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the LG U Plus files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/57 | InstallWebHard.exe |
| 0/56 | BMIPlayer.exe |
The detection percentage is based on that I've collected 113 scan reports for the LG U Plus files. 0 of these scan reports came up with some sort of detection. You can review the full details of the scan results by examining the files listed above.
The analysis is based on certificates with the following serial numbers: