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While Internet Explorer may still work with some AOL products and services, it's no longer supported by Microsoft and can't be updated. Because of this, we recommend you download a supported browser for a more reliable and secure experience online.
This reversible status can be used to note the temporary invalidity of the certificate (e.g., if the user is unsure if the private key has been lost). If, in this example, the private key was found and nobody had access to it, the status could be reinstated, and the certificate is valid again, thus removing the certificate from future CRLs.
403.13 – Client certificate revoked; 403.14 – Directory listing denied; 403.15 – Client Access Licenses exceeded; 403.16 – Client certificate is untrusted or invalid; 403.17 – Client certificate has expired or is not yet valid; 403.18 – Cannot execute request from that application pool
Without revocation, an attacker could exploit such a compromised or misissued certificate until expiry. Hence, revocation is an important part of a public key infrastructure . Revocation is performed by the issuing certificate authority , which produces a cryptographically authenticated statement of revocation.
If there's something unusual about your sign in or recent activity, we'll ask you to go through another verification step after you've entered the correct password. This is an important security feature that helps to protect your account from unauthorized access.
Alice and Bob have public key certificates issued by Carol, the certificate authority (CA). Alice wishes to perform a transaction with Bob and sends him her public key certificate. Bob, concerned that Alice's private key may have been compromised, creates an 'OCSP request' that contains Alice's certificate serial number and sends it to Carol.
A certificate may be revoked before it expires, for example because the secrecy of the private key has been compromised. Newer versions of popular browsers such as Firefox, [32] Opera, [33] and Internet Explorer on Windows Vista [34] implement the Online Certificate Status Protocol (OCSP) to verify that this is not
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