Did you just run into a file that has a digital signature from Simnet Bilgisayar Yazilim Hiz. San. ve Tic. Ltd. Sti.? If that's the case, please read on.
You will typically see Simnet Bilgisayar Yazilim Hiz. San. ve Tic. Ltd. Sti. when running the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the Simnet Bilgisayar Yazilim Hiz. San. ve Tic. Ltd. Sti. certificate with the following steps:
Here's a screenshot of a file that has been signed by Simnet Bilgisayar Yazilim Hiz. San. ve Tic. Ltd. Sti.:

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 Simnet Bilgisayar Yazilim Hiz. San. ve Tic. Ltd. Sti. 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 Simnet Bilgisayar Yazilim Hiz. San. ve Tic. Ltd. Sti., such as the street name, city and country.
VeriSign Class 3 Code Signing 2010 CA, Symantec Class 3 SHA256 Code Signing CA and Sectigo RSA Code Signing CA has issued the Simnet Bilgisayar Yazilim Hiz. San. ve Tic. Ltd. Sti. 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 Simnet Bilgisayar Yazilim Hiz. San. ve Tic. Ltd. Sti. files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/53 | ssn.exe |
| 0/56 | ssn.exe |
| 0/61 | ssn.exe |
| 0/68 | ssn.exe |
The detection percentage is based on the fact that I've collected 238 scan reports for the Simnet Bilgisayar Yazilim Hiz. San. ve Tic. Ltd. Sti. files. 0 of these scan results came up with some sort of detection. If you like, you can review the full details of the scan results by examining the files listed above.
The analysis is done on certificates with the following serial numbers: