Did you just download a file that has a digital signature from Serguei Birj and wonder if the file is safe? If so, please read on.
You will typically notice Serguei Birj when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screencap shows:

You can view the digital signature details for Serguei Birj with the following procedure:
Here is a screenshot of a file that has been digitally signed by Serguei Birj:

As you can see in the screencap above, Windows states that "This digital signature is OK". This implies that the file has been published by Serguei Birj and that the file has not been tampered with.
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, and so on. You can also view the address for Serguei Birj, such as the street name, city and country.
DigiCert High Assurance Code Signing CA-1 has issued the Serguei Birj certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screencap above.
The following are the Serguei Birj files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/53 | lsbwfpc.sys |
The detection percentage is based on the fact that I have gathered 53 scan reports for the Serguei Birj files. 0 of these scan reports 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 has been done on certificates with the following serial numbers: