Did you just run into a download or a file on your computer that has been digitally signed by Lenovo Group Limited? If that's the case, please read on.
You will probably notice Lenovo Group Limited when clicking to run the file. The publisher name shows up as the "Verified publisher" in the UAC dialog as the screencap shows:

You can view the digital signature details for Lenovo Group Limited with the following procedure:
Here is a screenshot of a file signed by Lenovo Group Limited:

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 Lenovo Group Limited 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, and so on. You can also see the address for Lenovo Group Limited, such as the street name, city and country.
VeriSign Class 3 Code Signing 2004 CA has issued the Lenovo Group Limited 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 Lenovo Group Limited files I've gathered, thanks to the FreeFixer users.Unfortunately I don't have any scan result from VirusTotal available for the Lenovo Group Limited files at the moment. The scan results will appear here as soon as a FreeFixer user uploads a file digitally signed by Lenovo Group Limited.
| Detection Ratio | File Name |
|---|---|
| Not available | ibmtcsd.exe |
The analysis has been done on certificates with the following serial numbers: