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The browser will completely block access to the site on any certificate issue. In practical terms, HSTS removes the "ignore certificate error" button that every
by user5994461 9y ago
The browser will completely block access to the site on any certificate issue. In practical terms, HSTS removes the "ignore certificate error" button that everyone got used to click.
It will backfire when the certificate expires, when some clients don't recognize the CA chain, when domains or subdomains don't match the certificate.