A DNS CAA record is a DNS resource record that lets domain owners specify which Certificate Authorities are authorized to issue SSL/TLS certificates for their domain. Every CA must check this record before issuing a certificate. Any CA not listed in the record must...
Multi-Perspective Issuance Corroboration (MPIC) is a certificate issuance security standard that requires Certificate Authorities to verify domain ownership from multiple, geographically separate network locations before issuing an SSL/TLS certificate. Instead of a...
SSL certificate outages occur when a browser cannot verify a site's TLS/SSL certificate, causing it to block access and display a security warning instead. The certificate may have expired, been misconfigured, revoked, or installed with an incomplete chain. When any...
Certificate Transparency (CT) logs are publicly accessible, append-only records that document every SSL/TLS certificate issued by participating Certificate Authorities. When a CA issues a certificate, it must submit that certificate to at least one CT log before...
Google Chrome Root Store Policy version 1.6, published on February 15, 2025, introduced sweeping changes that affect every public Certificate Authority trusted by Chrome and, by extension, every website relying on their certificates. The policy phases out...
Choosing the wrong PKI architecture means either overpaying for trust you don't need or locking your organization out of the control required to secure internal systems at scale. Internal PKI gives organizations full ownership over certificate issuance within a closed...
Verifying a digital signature confirms two things at once: that the content came from who it claims to have come from, and that nothing changed after it was signed. The process works by applying the signer's public key to decrypt a cryptographic hash stored in the...
Bare metal hosting is the strongest infrastructure choice for PCI DSS compliance because it provides single-tenant physical servers, eliminating the shared-resource risks that complicate cardholder data environment scoping in virtualized setups. For e-commerce...
ACME, EST, and SCEP are the three dominant protocols for automating certificate enrollment and renewal. ACME (Automatic Certificate Management Environment) handles public TLS certificates with zero manual intervention, EST (Enrollment over Secure Transport) targets...
OCSP stapling is a TLS extension that lets your server deliver a pre-fetched, CA-signed certificate revocation status directly to connecting clients during the handshake - removing the need for browsers to make a separate request to the Certificate Authority's OCSP...
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