Until early May, when The Verge confidentially disclosed the results of my independent security tests, the “web annotator” service provided by the tech startup Genius had been routinely undermining a web browser security mechanism. The web annotator is a tool which essentially republishes web pages in order to let Genius users leave comments on specific passages. In the process of republishing, those annotated pages would be stripped of an optional security feature called the Content Security Policy, which was sometimes provided by the original version of the page. This meant that anyone who viewed a page with annotations enabled was potentially vulnerable to security exploits that would have been blocked by the original site. Though no...
via The Verge
