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What are clouds made of? Linux servers, mostly.

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SSH Login Taking Forever? Check Your DNS Settings

SSH Login Taking Forever? Check Your DNS Settings

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2 min read
C# Networking Deep Dive with io_uring part 5 - Threadpool Rant

C# Networking Deep Dive with io_uring part 5 - Threadpool Rant

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5 min read
He creado una empresa ficticia IT/OT para poder encontrar sus vulnerabilidades y reforzar su seguridad en sus activos crĂ­ticos

He creado una empresa ficticia IT/OT para poder encontrar sus vulnerabilidades y reforzar su seguridad en sus activos crĂ­ticos

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1 min read
Linux Command Line: The 25 Commands I Use Every Day (2026)

Linux Command Line: The 25 Commands I Use Every Day (2026)

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5 min read
Pipes e Redirecionamento no Linux: o que eu aprendi estudando o terminal no celular

Pipes e Redirecionamento no Linux: o que eu aprendi estudando o terminal no celular

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3 min read
eBPF From Scratch: from the eBPF VM to writing your own tools (tested on a live Cilium cluster)

eBPF From Scratch: from the eBPF VM to writing your own tools (tested on a live Cilium cluster)

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3 min read
A mystery app showed up in my Ubuntu app drawer, and getting rid of it was annoying. So I built Showcase.

A mystery app showed up in my Ubuntu app drawer, and getting rid of it was annoying. So I built Showcase.

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4 min read
Nginx Event Loop — Complete Lifecycle Reference

Nginx Event Loop — Complete Lifecycle Reference

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18 min read
I built an AI that autonomously bans attackers on Linux — no human in the loop

I built an AI that autonomously bans attackers on Linux — no human in the loop

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5 min read
apt-mark hold doesn't pin versions — how it nearly removed OpenSSH across our fleet

apt-mark hold doesn't pin versions — how it nearly removed OpenSSH across our fleet

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4 min read
Network Fingerprinting: Analyzing Default ICMP Structures and Payload Mimicry

Network Fingerprinting: Analyzing Default ICMP Structures and Payload Mimicry

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4 min read
How to Harden a cPanel/WHM Server Against Common Attacks (Nigerian Hosting Guide)

How to Harden a cPanel/WHM Server Against Common Attacks (Nigerian Hosting Guide)

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3 min read
Roadmap to Become a DevOps Engineer in 2026 🚀

Roadmap to Become a DevOps Engineer in 2026 🚀

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4 min read
Getting the Chipsailing CS9711 USB Fingerprint Reader Working on Linux

Getting the Chipsailing CS9711 USB Fingerprint Reader Working on Linux

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4 min read
Anthropic, Google, and Microsoft just built a shared security team for open source. AI is why.

Anthropic, Google, and Microsoft just built a shared security team for open source. AI is why.

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3 min read
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