Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
A PCI option ROM is driver code on a GPU, NIC or storage card that firmware runs before the OS. Learn how Secure Boot verifies it and how PCRs record it.
Coreboot is open source boot firmware that initializes hardware, then hands off to a payload. Learn its stages, payloads, blobs, vboot and safe flashing.
Code flows Fedora to CentOS Stream to RHEL. Every RHEL release from 5 to 10, Fedora's cycle, support dates and the security changes each one made.
Android 10 to 16 each added security defaults, from scoped storage to Advanced Protection. Versions, API levels, patch support and how to check a phone.
Debian has shipped 18 codenamed releases, from Buzz (1.1, 1996) to Trixie (13, 2025). Here is every codename, release date and LTS and ELTS end date.
Seven macOS releases shipped from Big Sur 11 to Golden Gate 27. Here are the dates, Mac support, patch windows and the security change in each release.
MACsec (IEEE 802.1AE) encrypts Ethernet frames hop by hop. How the SecTAG, GCM-AES suites and MKA keys work, its limits, and a Linux setup you can verify.
BACnet is the ASHRAE 135 protocol for HVAC, lighting and access control. How objects and BBMDs work, why it lacks auth, and how BACnet/SC adds TLS 1.3.
VXLAN carries Ethernet in UDP port 4789 with a 24-bit VNI; EVPN adds a BGP control plane. How both work, why neither encrypts, and how to secure them.
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