HSTS is a tool that tells browsers to only use SSL for all future requests to a website. It strengthens SSL by preventing many common attacks against it (such as protocol attack and cookie hijacking).

 

Enabling HSTS is simple

 

Step 1 - Access and edit your .htaccess file. Click here for a guide if you're unsure how to do that.

 

Step 2 - Add this line to the top of the file:

 

Header set Strict-Transport-Security "max-age=31536000" env=HTTPS

 

Step 3 - Hit Save Changes on the top right of the screen

 


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