Did you just download a file that has been digitally signed by KINGSOFT JAPAN INC. and wonder if the file is safe? If so, please read on.
You'll probably notice KINGSOFT JAPAN INC. when running 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 KINGSOFT JAPAN INC. digital signature with the following steps:
Here's a screenshot of a file that has been signed by KINGSOFT JAPAN INC.:

As you can see in the screenshot above, the Windows OS reports that "This digital signature is OK". This implies that the file has been published by KINGSOFT JAPAN INC. and that the file has not been tampered with.
If you click the View Certificate button shown in the screencap 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 KINGSOFT JAPAN INC., such as the street name, city and country.
GlobalSign ObjectSign CA and GlobalSign CodeSigning CA - G2 has issued the KINGSOFT JAPAN 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 KINGSOFT JAPAN INC. files I have collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/48 | ApplicationManager.exe |
| 0/42 | navinow.dll |
| 0/55 | ApplicationManager.exe |
| 0/48 | ksdef.sys |
| 0/51 | wpsupdate.exe |
| 0/47 | wpsupdate.exe |
The detection percentage is based on the fact that I've collected 291 scan reports for the KINGSOFT JAPAN INC. files. 0 of these scan reports came up with some sort of detection. You can view the full details of the scan reports by examining the files listed above.
The analysis is based on certificates with the following serial numbers: