Identity security

Machine identity and PKI

Certificate authorities and certificate lifecycle management for TLS, code signing and device identity.

5 vendors · alphabetical, never ranked

• EntrustEntrust sells a cryptographic security platform that manages keys, secrets and certificates, including public key infrastructure, certificate lifecycle management and hardware security modules.Ownership not established · primary category
• KeyfactorKeyfactor sells software for public key infrastructure and certificate lifecycle management, issuing and automating cryptographic identities for machines, workloads and AI agents.Privately held · primary category
• Red SiftRed Sift sells a security platform built around DMARC, SPF, and DKIM email authentication, with added modules for TLS certificate monitoring, brand and domain impersonation detection, and external attack surface discovery.Privately held
• SandboxAQSandboxAQ is a broader AI and quantum technology company; this record covers its cybersecurity product, AQtive Guard, which discovers cryptographic keys and certificates across an organization's infrastructure and manages their remediation and migration to quantum-resistant algorithms.Privately held
• SectigoSectigo sells digital certificates and automated certificate lifecycle management software to secure human and machine identities, operating as a certificate authority.Owned by GI Partners since 2020 · primary category

No vendor pays to be listed or to change what we write. Descriptions are ours, drawn from each company's own site and filings. Corrections: /corrections.