Did you just find a file that has a digital signature from DAUB Alderney Limited? If that's the case, please read on.
You will probably notice DAUB Alderney Limited when double-clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screengrab shows:

You can view additional details from the DAUB Alderney Limited certificate with the following procedure:
Here's a screenshot of a file digitally signed by DAUB Alderney Limited:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This means that the file has been published by DAUB Alderney Limited and that no one has tampered with the file.
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 view the address for DAUB Alderney Limited, such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA has issued the DAUB Alderney Limited 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 DAUB Alderney Limited files I've gathered, thanks to the FreeFixer users.Unfortunately I don't have any scan result from VirusTotal available for the DAUB Alderney Limited files at the moment. The scan results will appear here as soon as a FreeFixer user uploads a file digitally signed by DAUB Alderney Limited.
| Detection Ratio | File Name |
|---|---|
| Not available | JackpotLinerSetup.exe |
The analysis is done on certificates with the following serial numbers: