XMAKYNA Blog

Engineering ideas, lessons and updates from XMAKYNA.

Technical essays and explanations that make useful engineering ideas easier to understand, alongside selected Company updates. Read them here or follow through RSS.

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Illustration accompanying an overview of computer security, showing the interacting controls and trust boundaries that limit what untrusted actions can affect.
EngineeringFoundations

Why computer security is hard

Security is not established by a working demonstration. This overview examines identity and authority, design and memory safety, hardware and containment, supply chains, and the evidence needed to judge security claims.

Matte night-time map of worldwide internet connectivity, with the British Isles near the centre and brighter areas marking dense network connections.
EngineeringFoundations

How the internet carries information, and why services can fail

How networks move information between computers, why DNS, routers, CDNs and servers do different jobs, and how shared dependencies can cause outages.

Dark schematic of an integrated circuit representing binary information and the path from zeros and ones to meaningful output.
EngineeringFoundations

How computers turn 0s and 1s into words and pictures

How electronic switches become binary numbers, letters, pictures and sound, and how computer instructions turn those values into something useful.

Illustration of a filing clerk at numbered drawers, surrounded by diagrams of instructions, addresses and repeated steps, representing Feynman’s model of computer operation.
EngineeringFoundations

How computers work: Feynman’s high-speed filing clerk

A primer on how computers work through Richard Feynman’s high-speed filing-clerk model, from memory and pointers to control flow, failure and intelligence.

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