IoT Security Best Practices for 2024

Security is now table stakes. Here’s a practical, no-fluff checklist you can ship with:

Security is now table stakes. Here’s a practical, no-fluff checklist you can ship with:

1) Identity and Trust

Per-device identity (no shared secrets).

mTLS for device→cloud; pin certificates where possible.

Unique keys at manufacture; rotate credentials on a schedule.

Secure boot with signed images (MCUboot/TF-M).

OTA with atomic swaps and rollback; fail closed on verification errors.

Lock debug ports (JTAG/SWD) in production.

Minimize open ports; prefer outbound-initiated connections.

Micro-segment networks; least privilege for every service.

Default OFF: enable only what you need.

Centralized logs/metrics/traces; alert on anomalies.

SBOM for every build; watch CVEs for your RTOS/SDKs.

Playbooks for key events: expired certs, OTA rollback, key rotation.

Encrypt at rest where feasible; always in transit.

Minimize PII; redact at the edge; define retention windows.

Consider anonymization for analytics workloads.

Secure boot + signed OTA + rollback

Per-device identity + mTLS

Locked debug + minimal ports

Micro-segmentation + anomaly alerts

SBOM + CVE watching + playbooks

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