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How to Build a Secure Mini CA with a Raspberry Pi and Yubikey
Create a small certificate authority for your home network by running Step-CA on a Raspberry Pi; with a Yubikey for private key security.
February 1, 2026
How to Prepare a Headless Raspberry Pi For Your Network
Configure a Raspberry Pi that's ready to go on your network at the first bootup; no keyboard and monitor required.
August 25, 2024
GnuPG Part 4 – Encrypt and Sign Files
How to manually encrypt and sign files with GnuPG.
December 15, 2022
GnuPG Part 3 – Import, Sign, and Trust Keys
How to import public keys from other PGP users, perform key signing, and how trust works.
December 15, 2022
Do I Need a VPN? Their Uses Explained
A primer on Virtual Private Networks (VPNs) for average users.
March 13, 2022
Email Security – SPF, DKIM, and DMARC Demystified
Introduction to the email security standards SPF, DKIM, and DMARC.
January 24, 2022