AWS IoT Device Defender is a security service that helps you secure your IoT devices. It continuously audits your IoT configurations to...
Pricing varies based on usage
Best Keyfactor PKI Platform Alternatives ranked by AI · updated Aug 2026
Keyfactor PKI Platform manages machine identities, certificates, and keys across IoT devices, applications, and infrastructure. It is aimed at enterprises that need centralized PKI governance and automated certificate operations.
Top 6 Keyfactor PKI Platform alternatives
Verimatrix Accelerate IoT Security is an enterprise service for protecting connected devices, their identities, and communications throughout the device lifecycle. It is...
Pros
- Combines IoT device security and lifecycle protection in one enterprise offering
- Designed for connected-device manufacturers and service providers
- Backed by Verimatrix's experience in embedded and digital-content security
Cons
- Enterprise sales process makes pricing and self-service evaluation difficult
- Less transparent than cloud-native IoT security services
- Smaller developer ecosystem than AWS or Microsoft alternatives
3
Microsoft Defender for IoT
Microsoft
Microsoft Defender for IoT provides agentless security monitoring for OT and IoT devices. It integrates asset discovery, vulnerability management, threat detection, and...
Pros
- Integrates well with Microsoft Sentinel and Defender security workflows
- Agentless monitoring supports many legacy and unmanaged devices
- Can reduce tool sprawl for organizations already invested in Microsoft
Cons
- Best value usually requires an existing Microsoft security ecosystem
- OT-specific depth may be less focused than Dragos or Nozomi Networks
- Licensing and deployment models can be difficult to compare
4
Device Authority KeyScaler
Device Authority
KeyScaler is an IoT security platform for automating device identity, certificate provisioning, key management, and secure data access. It targets manufacturers and...
Pros
- Closer feature parity with ioTrust for device identity and trust management
- Automates certificate and key lifecycle operations at fleet scale
- Supports integrations with cloud, PKI, and enterprise security systems
Cons
- Less comprehensive for network-based OT threat detection
- Implementation can require PKI and identity-management expertise
- Public pricing and product evaluation materials are limited
Quote-based
5
DigiCert IoT Trust Manager
DigiCert
DigiCert IoT Trust Manager provides certificate-based identity and trust management for connected products and industrial devices. It helps manufacturers provision, monitor, and...
Pros
- Strong certificate authority and public-trust capabilities
- Purpose-built lifecycle management for connected products
- Useful for manufacturers shipping devices that need interoperable certificates
Cons
- Can be more expensive than cloud-provider-native identity services
- Certificate-focused scope may require separate runtime threat monitoring
- Advanced integrations and pricing are sales-led
6
Sectigo IoT Manager
Sectigo
Sectigo IoT Manager is a certificate and device-identity service for securing connected products and IoT fleets. It targets manufacturers and enterprises that...
Pros
- Strong fit for certificate-based authentication across device fleets
- Supports automated issuance and renewal workflows
- Can extend existing Sectigo PKI relationships into IoT deployments
Cons
- Less comprehensive for behavioral monitoring than AWS or Microsoft services
- Enterprise pricing is not publicly listed
- Integration depth depends on device and platform support
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