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Supply Chain Security

How to Install Claude Code on Windows, Mac and Linux, and Set It Up Safely

Install Claude Code with Anthropic's native installer from claude.ai, then verify the signed release manifest, pick a permission mode and keep it updated.

Oct 23, 202632 min read
Supply Chain Security

Charging Ports: USB-C, USB PD, Qi2, the EU Rule and Juice Jacking

Phones moved from barrel jacks to Micro-USB, Lightning and USB-C with USB PD up to 240 W. The EU rule, Qi2 and what juice jacking really is.

Oct 23, 202632 min read
Supply Chain Security

Ubuntu 18.04 LTS Bionic Beaver: Release Facts, Kernel 4.15, Security

Ubuntu 18.04 LTS shipped 23 April 2018 with kernel 4.15 and GNOME 3.28. Standard support ended May 2023; ESM runs to May 2028, Legacy to May 2033.

Oct 23, 202635 min read
Supply Chain Security

Ubuntu 24.04 LTS Noble Numbat: Release Facts, Kernel 6.8, Security

Ubuntu 24.04 LTS shipped 25 April 2024 with kernel 6.8 and GNOME 46, supported to May 2029, or 2034 with ESM. Security defaults and what changed.

Oct 23, 202637 min read
Supply Chain Security

Ubuntu 22.04 LTS Jammy Jellyfish: What Shipped and What Changed

Ubuntu 22.04 LTS shipped 21 April 2022 with kernel 5.15, GNOME 42 and OpenSSL 3.0, supported to 2027, or 2032 with ESM. What changed from 20.04 and why.

Oct 23, 202636 min read
Supply Chain Security

OSPF Explained: How Link-State Routing Works and How to Secure It

OSPF is the link-state routing protocol inside most enterprise networks. How adjacencies, LSAs, areas and SPF work, and how to authenticate it properly.

Oct 23, 202648 min read
Supply Chain Security

AirDrop, Quick Share and Wi-Fi Direct: How They Work and What to Set

AirDrop and Quick Share find nearby devices over Bluetooth, then send over direct Wi-Fi. The safe default: receive from contacts or your own devices only.

Oct 23, 202641 min read
Supply Chain Security

Syslog Explained: RFC 5424 Format, TLS Transport and Reliable Logging

Syslog carries event logs from hosts to collectors. How RFC 5424 messages are built, how UDP, TCP, TLS and DTLS transports differ, and how to secure them.

Oct 23, 202649 min read
Supply Chain Security

Ubuntu 20.04 LTS Focal Fossa: What Shipped, What Changed, Security

Ubuntu 20.04 LTS shipped 23 April 2020 with kernel 5.4 and GNOME 3.36. What changed from 18.04, the security defaults, and where FIPS stands today.

Oct 23, 202636 min read

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