Subresource Integrity

Verify that HTML script and link resources have not been modified.

<script src="proxy.php?url=https%3A%2F%2Fajax.googleapis.com%2Fajax%2Flibs%2Fjquery%2F2.2.0%2Fjquery.min.js"
	integrity="sha384-K+ctZQ+LL8q6tP7I94W+qzQsfRV2a+AfHIi9k8z8l9ggpc8X+Ytst4yBo/hH+8Fk"
	crossorigin="anonymous"></script>
		

Browser supports subresource integrity:

Load script with good integrity

Load script with bad integrity

Sources:

https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity

https://www.srihash.org/

http://caniuse.com/#feat=subresource-integrity