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.
Sample faster than twice the highest frequency and a band limited signal can be rebuilt. Worked examples from CD audio, G.711 phones, aliasing and SDR.
Newton's law of cooling says an object cools at a rate set by its gap from the surroundings. Worked examples: coffee, cooling food and time since death.
Air molecules scatter blue light about 5.9 times more than red, which colours the sky. Worked examples for blue skies, red sunsets, violet and fibre loss.
Pluton is a Microsoft designed security processor inside AMD, Intel and Qualcomm chips. How it works, how it acts as a TPM and how it is updated.
DRTM restarts the chain of trust after firmware has run. How Intel TXT, AMD SKINIT and Secure Launch measure a late launch, and how to check yours.
Every Mac OS X release from 10.0 Cheetah (2001) to 10.15 Catalina (2019), its last security update and the protections it added, from FileVault to SIP.
Quartz oscillators start as cultured quartz grown in autoclaves, then are cut, lapped, plated, trimmed and sealed. Here is each step, plus TCXO and OCXO.
A security key is a certified secure chip, NFC antenna and touch pad sealed in plastic, with an attestation key added at the factory. How it is built.
NFC is 13.56 MHz radio for a few centimetres, built on ISO/IEC 14443 and 18092. How NDEF, card emulation and relay attacks work, and what limits relays.
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