Did you just download a file that has a digital signature from SmartTweak Software Ltd and wonder if the file is safe? If that's the case, please read on.
You will probably see SmartTweak Software Ltd 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 digital signature details for SmartTweak Software Ltd with the following procedure:
Here is a screenshot of a file that has been signed by SmartTweak Software Ltd:

As you can see in the screencap above, Windows states that "This digital signature is OK". This means that the file has been published by SmartTweak Software Ltd 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 view the address for SmartTweak Software Ltd, such as the street name, city and country.
Thawte Code Signing CA - G2 has issued the SmartTweak Software Ltd certificates. You can also see the details of the issuer by clicking the View Certificate button shown in the screenshot above.
The following are the SmartTweak Software Ltd files I've collected, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 1/35 | FixMyRegistry.exe |
| 1/54 | FixMyRegistry.exe |
| 2/53 | UpdateMyDrivers (2).exe |
| 0/49 | SpeedUpMyComputer.exe |
| 0/51 | FixMyRegistry.exe |
| 0/50 | SpeedUpMyComputer.exe |
Here is the detection names for the SmartTweak Software Ltd files. I have grouped the detection names by each scanner engine. Thanks to VirusTotal for the scan results.
| Scanner | Detection Names |
|---|---|
| AVG | Generic.43D |
| Comodo | Heur.Suspicious |
| DrWeb | Program.Unwanted.37 |
The detection percentage is based on that I have gathered 292 scan results for the SmartTweak Software Ltd files. 4 of these scan results came up with some sort of detection. If you like, 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: