Jake Archibald writes in his blog about the bigger problem presented by importing third-party content into web pages. Even CSS is a problem as a CSS keylogger demo showed the other day.
A few days ago there was a lot of chatter about a 'keylogger' built in CSS.
Some folks called for browsers to 'fix' it. Some folks dug a bit deeper and saw that it only affected sites built in React-like frameworks, and pointed the finger at React. But the real problem is thinking that third party content is 'safe'.
While most are acutely aware, yet ignore, the danger presentd by third-party javascript and javascript in general, most forget about CSS. Jake reminds us and walks through quite a few exampled of how CSS can be misused by third-parties exporting it.
Source : Third party CSS is not safe
(Score: 5, Informative) by Justin Case on Wednesday February 28 2018, @08:51PM
Because they want to execute their crap code on my hardware, exposing my data including data that has nothing to do with them. They won't be "on the hook" for the damage they cause; they will be oblivious. Like most of their customers.