You can use subresource integrity to prevent them swapping out the javascript. https://hacks.mozilla.org/2015/09/subresource-integrity-in-firefox-43/ https://h

You can use subresource integrity to prevent them swapping out the javascript. https://hacks.mozilla.org/2015/09/subresource-integrity-in-firefox-43/ https://hacks.mozilla.org/2015/09/subresource-integrity-in-f...