HTML5 ping tracking – Firefox :firefox: will enable it by default:
– HTML5 ping attributes can be used to track people if they click a link (<a href=… ping=…>) by sending POST requests to an arbitrary amount of hosts
– tracking is possible without any JavaScript, or Cookies
– Steve Gibson talked about it in Security Now 709: https://mastodon.at/@infosechandbook/101899819296611698
– ping is enabled in Chrome, Opera, Edge, Safari by default