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 DigiCert IoT Trust Manager Alternatives ranked by AI · updated Aug 2026
DigiCert IoT Trust Manager provides certificate-based identity and trust management for connected products and industrial devices. It helps manufacturers provision, monitor, and renew device certificates across the product lifecycle.
Top 6 DigiCert IoT Trust Manager 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
Keyfactor PKI Platform
Keyfactor
Keyfactor PKI Platform manages machine identities, certificates, and keys across IoT devices, applications, and infrastructure. It is aimed at enterprises that need...
Pros
- Broader PKI coverage than Verimatrix across enterprise machines and devices
- Strong certificate discovery, policy, and renewal automation
- Supports hybrid and multi-cloud deployments
Cons
- Broader platform scope can mean more configuration than an IoT-focused service
- Enterprise implementation may require specialist PKI expertise
- Pricing and many advanced capabilities require a sales engagement
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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