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Security Guides

Where should a device maker keep its firmware signing private key?

Keep the private signing key off build servers and developer laptops, in a smartcard or HSM reached by PKCS#11. Devices only need the public key.

Oct 18, 20263 min read
Security Guides

Find your sector risk management agency: six sectors

Which federal agency is the sector risk management agency for health, water, energy, transport, emergency services and communications, per CISA's pages.

Oct 18, 20263 min read
Security Guides

How do I find which Kubernetes pods run a vulnerable image?

A new CVE lands and you need affected workloads now. Use kubectl to list running images, match them to digests, and map them back to owners and repos.

Oct 18, 20263 min read
Security Guides

How do you find undocumented API endpoints? Five places to look

Shadow APIs hide in gateway logs, route tables, old docs, client apps and forgotten hosts. Five places to look, and how to turn findings into an inventory.

Oct 18, 20263 min read
Security Guides

How do you find DLL planting risk in your app with Process Monitor?

Microsoft documents a Process Monitor procedure to spot DLL loads from the current directory. The filters to set, the test to run and what to fix.

Oct 18, 20263 min read
Security Guides

What should you log when users upload files to your application?

Log upload attempts, validation results, scan outcomes and storage IDs, not file contents. An event list from OWASP vocabulary plus safe storage notes.

Oct 18, 20264 min read
Security Guides

What should a code review check in file upload handling?

Check the extension allow list, ignore the client content type, rename on the server, store outside the webroot, cap sizes and require login.

Oct 18, 20264 min read
Security Guides

How does a FastAPI response_model stop password and field leaks?

Return one model for input and another for output. FastAPI filters the response to the output model's fields, so passwords and internal fields stay private.

Oct 18, 20264 min read
Security Guides

Family password habits: passphrases, a manager and MFA

Simple password rules for the whole household, based on CISA guidance: long unique passphrases, a password manager, and multifactor on email first.

Oct 18, 20263 min read

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