ARM TrustZone vs Fortanix Confidential Computing: Side-by-Side Comparison (2026)

ARM TrustZone

Hardware security teams protecting ARM-based IoT and embedded devices will get the most from ARM TrustZone because it isolates sensitive workloads at the processor level, where software-only defenses can't reach. The free pricing and 977 GitHub stars reflect genuine adoption in resource-constrained environments where traditional EDR is impractical. Skip this if you're looking for visibility into user behavior or threat hunting; TrustZone is a containment mechanism, not a detection platform, and it requires integrating your apps into its secure execution environment during development.

Fortanix Confidential Computing

Enterprise security teams protecting sensitive computation on untrusted infrastructure need Fortanix Confidential Computing because it encrypts data while it's actively processing, not just in transit or at rest. Intel SGX and AMD SEV support across major cloud providers means you're getting hardware-backed isolation that the OS and hypervisor can't breach, directly strengthening PR.DS and PR.PS controls. Skip this if your threat model doesn't include a compromised cloud provider or if you're managing workloads that can't be refactored for enclave execution; Fortanix demands architectural changes, not just a policy checkbox.