Did you just find a download or a file on your computer that has been digitally signed by Quickline AG? If so, please read on.
You'll probably notice Quickline AG 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 the additional details from the Quickline AG digital signature with the following steps:
Here is a screenshot of a file that has been signed by Quickline AG:

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 Quickline AG and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot 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, etc. You can also examine the address for Quickline AG, such as the street name, city and country.
DigiCert SHA2 Assured ID Code Signing CA has issued the Quickline AG certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Quickline AG files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/57 | omclient.exe |
The detection percentage is based on that I have gathered 57 scan reports for the Quickline AG files. 0 of these scan results came up with some sort of detection. You can review the full details of the scan reports by examining the files listed above.
The analysis is based on certificates with the following serial numbers: