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.
PROFINET is PI's industrial Ethernet standard in IEC 61158 and 61784. How RT, IRT and TSN work, why DCP is unauthenticated, and Security Classes 1 to 3.
Buoyant force equals the weight of the fluid an object displaces. The pressure proof, plus worked examples for blocks, ships, hot air balloons and density.
How multi-agent systems split work: orchestrator and workers, handoffs, shared state and A2A, with real costs, failure modes and a least privilege design.
How iPhone and Android spot someone else's Bluetooth tag moving with you, what the IETF DULT drafts require, why alerts lag, and what to do safely.
The Nernst equation gives a cell's voltage away from standard conditions. Each term, its history, and worked examples for batteries, pH meters and neurons.
Bragg's law, nλ = 2d sin θ, links wavelength, plane spacing and angle. History, Miller indices and worked silicon, powder, neutron and strain examples.
Plan a 10 GbE homelab: choose SFP+ DAC, fibre or 10GBASE-T, pick NICs and switches, set VLANs and MTU, test with iperf3 and ethtool, keep firmware current.
Run OpenBao as a homelab secrets server: seal and unseal keys, AppRole and OIDC logins, dynamic database credentials, snapshots, restore tests, rotation.
RATS defines who proves device state to whom; EAT carries the evidence and CoRIM carries the expected values. How they fit, with commands and tables.
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