Injecting links into websites carries security and privacy risks. While one might trust the automated process behind the scenes and Google’s own security controls, it will be a concern that such links are automatically applied and take users away from the website they have elected to visit.

This new feature allows users to quickly search for additional context about a term or phrase. But some website owners may not be happy. Here's why.

Google is injecting the links into pages you visit through the Google app's built-in web browser, which display a pop-up panel of Google Search results related to the word or phrase. Google's announcement said web publishers can opt-out by submitting a form,