Is your product key really secure?

Foreword:

Maybe because we use the Windows system every day, we have an illusion: Our product keys are very safe. Even the network administrators of some companies have not considered whether product keys are secure. In fact, our keys are all written in the registry. Although the actual product key cannot be seen in Windows properties, this veil can be easily unlocked through some software.

(Learning video sharing: Introduction to Programming)

You can’t see the product key in the properties:

Check the product key through other software:

## And even more ruthlessly, all the keys have been found:

Is your product key easily leaked in front of these software? (Another,). In order to avoid key theft, we can protect the security of product keys through Windows Software Licensing Management Tool (slmgr.vbs). You can see the help information of the program through slmgr /?:

On the second page of the help information, use the /cpky command to clear the product key information in the registry:

When running the slmgr /cpky command, the following error is prompted:

This command needs to be run as an administrator. Run as Run CMD as administrator and execute slmgr /cpky again:

After clearing the product key information, check the current key status of the machine:

Software 1:

Software 2:

##After using /cpky, the system is still activated. Please rest assured:

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