Did you just stumble upon a file that has a digital signature from FOR TESTING ONLY - IPF_PreProd_Cert? If that's the case, please read on.
You will typically see FOR TESTING ONLY - IPF_PreProd_Cert when double-clicking to run the file. The publisher name is then displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the FOR TESTING ONLY - IPF_PreProd_Cert certificate with the following procedure:
Here's a screengrab of a file signed by FOR TESTING ONLY - IPF_PreProd_Cert:

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 FOR TESTING ONLY - IPF_PreProd_Cert and that the file has not been tampered with.
If you click the View Certificate button shown in the screencap 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 FOR TESTING ONLY - IPF_PreProd_Cert, such as the street name, city and country.
Intel Dev Internal Issuing CA 11A has issued the FOR TESTING ONLY - IPF_PreProd_Cert certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screencap above.
These are the FOR TESTING ONLY - IPF_PreProd_Cert files I've collected, thanks to the FreeFixer users.At the moment there's no scan result available for any of the FOR TESTING ONLY - IPF_PreProd_Cert files, but they have been queued for scanning. Please reload this page in 5-10 minutes to check if the scan result is available.
| Detection Ratio | File Name |
|---|---|
| Queued for scan.. | ipfsvc.exe |
| Queued for scan.. | ipfsvc.exe |
The analysis has been done on certificates with the following serial numbers: