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.

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,

The Google App for iOS can automatically convert some website text into links to Google Search results, as announced in a community post that SERoundtable spotted. Google calls the feature “Page Annotations” and says it “extracts interesting entities from the webpage and highlights them in line,