Due to recently disclosed security vulnerabilities for nearly all computers [1,2], if you are using the critical css technique [3] on your website, you should disable the document.cookie
read by setting your cookies to be SameSite
[4] and HttpOnly
[5] on the server, as recommended in [6]. Otherwise sensitive data (such as session keys) may be exposed to malicious third
parties.
Two days ago a group of security researchers disclosed two security flaws, dubbed Meltdown and Spectre, that allow processor exploits to steal passwords and other sensitive user data from almost any device made in the past 20 years. [1,2].