Did you just stumble upon a download or a file on your computer that has a digital signature from Open Source Developer, Martijn Laan? If so, please read on.
You will typically see Open Source Developer, Martijn Laan 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 also view the Open Source Developer, Martijn Laan certificate with the following steps:
Here is a screenshot of a file that has been digitally signed by Open Source Developer, Martijn Laan:

As you can see in the screengrab above, Windows reports that "This digital signature is OK". This implies that the file has been published by Open Source Developer, Martijn Laan and that no one has tampered with the file.
If you click the View Certificate button shown in the screenshot 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 see the address for Open Source Developer, Martijn Laan, such as the street name, city and country.
Certum Level III CA has issued the Open Source Developer, Martijn Laan certificates. You can also view the details of the issuer by clicking the View Certificate button shown in the screengrab above.
These are the Open Source Developer, Martijn Laan files I have gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/67 | _isdecmp.dll |
| 0/67 | _isdecmp.dll |
The detection percentage is based on that I have gathered 134 scan results for the Open Source Developer, Martijn Laan files. 0 of these scan results came up with some sort of detection. You can view the full details of the scan results by examining the files listed above.
The analysis has been done on certificates with the following serial numbers: