Hi,
Can you specify what are the different security messages which you are getting and which operating systems are you executing your scripts? You can make some registry settings / edit group policies to not to show those security warnings manually or Do you need to achieve it through scripts?
Below are few links to vbscript samples which allows to add a website to trusted sites
https://gallery.technet.microsoft.com/scriptcenter/Add-trusted-sites-to-IE-6be1c7fc
https://community.spiceworks.com/scripts/show/2012-vbscript-for-adding-a-website-to-trusted-sites
https://blogs.technet.microsoft.com/heyscriptingguy/2005/02/14/how-can-i-add-a-web-site-to-the-trusted-sites-zone/
