Did you just run into a download or a file on your computer that has a digital signature from Xirrus, Inc.? If so, please read on.
You will probably see Xirrus, Inc. when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can view the additional details from the Xirrus, Inc. digital signature with the following steps:
Here is a screenshot of a file that has been digitally signed by Xirrus, Inc.:

As you can see in the screencap above, the Windows OS states that "This digital signature is OK". This means that the file has been published by Xirrus, Inc. 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 view the address for Xirrus, Inc., such as the street name, city and country.
VeriSign Class 3 Code Signing 2009-2 CA has issued the Xirrus, Inc. certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
These are the Xirrus, Inc. files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/61 | NewShortcut1_7BBE3D9BA9104AD68357AD6E4FA5F4EE.exe |
The detection percentage is based on that I've collected 61 scan results for the Xirrus, Inc. 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 results by examining the files listed above.
The analysis is based on certificates with the following serial numbers: