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HSTS addresses this problem [2]: §2.4 by informing the browser that connections to the site should always use TLS/SSL. The HSTS header can be stripped by the attacker if this is the user's first visit. Google Chrome, Mozilla Firefox, Internet Explorer, and Microsoft Edge attempt to limit this problem by including a "pre-loaded" list of HSTS sites.
The server communicates the HPKP policy to the user agent via an HTTP response header field named Public-Key-Pins (or Public-Key-Pins-Report-Only for reporting-only purposes).
This class of status code indicates the client must take additional action to complete the request. Many of these status codes are used in URL redirection. [2]A user agent may carry out the additional action with no user interaction only if the method used in the second request is GET or HEAD.
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Transport Layer Security (TLS) is a cryptographic protocol designed to provide communications security over a computer network, such as the Internet.The protocol is widely used in applications such as email, instant messaging, and voice over IP, but its use in securing HTTPS remains the most publicly visible.
CRL for a revoked cert of Verisign CA. There are two different states of revocation defined in RFC 5280: Revoked A certificate is irreversibly revoked if, for example, it is discovered that the certificate authority (CA) had improperly issued a certificate, or if a private-key is thought to have been compromised.
On the browser side, OCSP stapling was implemented in Firefox 26, [4] [21] in Internet Explorer since Windows Vista, [22] and Google Chrome in Linux, ChromeOS, and Windows since Vista. [ 23 ] For SMTP the Exim message transfer agent supports OCSP stapling in both client [ 24 ] and server [ 25 ] modes.
MapQuest appears to be poking fun at President Trump's recent rebranding of the Gulf of Mexico. Here's a look at the new names people have given it.