Browsers save HSTS flag for each HTTPS site. Every HTTPS site can read HSTS flags for all domains.
Details: http://www.radicalresearch.co.uk/lab/hstssupercookies
Browsers save HSTS flag for each HTTPS site. Every HTTPS site can read HSTS flags for all domains.
Details: http://www.radicalresearch.co.uk/lab/hstssupercookies