Win7 system uses digital signature to prevent rogue software

1. Right click on the QQ installer, select Properties to open, and select the “Digital Signature” tab; as shown below.

2. Click on the item in the signature list, then click “ Detailed information & rdquo;; as shown below

3, then click “ view certificate & rdquo;; as shown below

4, then to the "details" tab, Click the Copy to File button; as shown below

5, the certificate export wizard appears, after the next step, select the code you want to guide, and then click Next, generally the default;

6, the export is successful, as shown below

7, if you want to prevent a certain rogue software, then we will export the exported certificate on the line.