Publish Security Problem

Hi experts:
A security problem.
After we download robot package , we can unzip the package and we can see all source. (As pic shown below)
Is there any solution can avoid to it in user side?

Pic1: unzip package

Pic2 : we can see all source

hi @irol

  1. Select the file or folder you want to protect.
  2. Right-click the file or folder and click Properties .
  3. click on the security tab and tick the following