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OCSP checking creates a privacy concern for some users, since it requires the client to contact a third party (albeit a party trusted by the client software vendor) to confirm certificate validity. OCSP stapling is a way to verify validity without disclosing browsing behavior to the CA. [2]
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.
Seeing security certificate errors when visiting certain websites? Learn how to remedy this issue in Internet Explorer.
The Online Certificate Status Protocol (OCSP) stapling, formally known as the TLS Certificate Status Request extension, is a standard for checking the revocation status of X.509 digital certificates. [1]
OCSP Support: Zen Browser uses the Online Certificate Status Protocol (OCSP) to verify the validity of websites' SSL certificates, enhancing security against expired or revoked certificates. [20] HTTPS-Only Mode: Zen Browser attempts to connect to websites over HTTPS whenever possible, encrypting communication between the user and the website. [20]
SSL (Secure Sockets Layer) is an industry standard for encrypting private data sent over the Internet. It helps protect your account from hackers and insures the security of private data sent over the Internet, like credit cards and passwords.
Certificate Transparency (CT) is an Internet security standard for monitoring and auditing the issuance of digital certificates. [1] When an internet user interacts with a website, a trusted third party is needed for assurance that the website is legitimate and that the website's encryption key is valid.
An attacker with the ability to present a compromised certificate likely also has the ability to prevent the client performing an online revocation status check; in this case, failing-soft effectively provides no protection at all. Browsers have chosen this arm of the dilemma and preferred availability over security. [19]