More Super Cookies that can track you

 

 Ironically, the chink that allows websites to uniquely track people’s incognito browsing is a much-needed and relatively new security mechanism known as HTTP Strict Transport Security. Websites use it to ensure that an end user interacts with their servers only when using secure HTTPS connections. By appending a flag to the header a browser receives when making a request to a server, HSTS ensures that all later connections to a website are encrypted using one of the widely used HTTPS protocols.

via Browsing in privacy mode? Super Cookies can track you anyway | Ars Technica.

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