blog
Technical reporting from the systems, worlds, and adversarial edges of CLI-Games.
Part of the CLI-Games Manual. Looking for reference docs and how-tos? Browse the Wiki →
Bring Your Class: Groups, Weekly Goals, and the Real Linux Commands to Run Them
CLI-Games now has groups: one link brings a whole class in (no accounts needed on day one), every game gets a group leaderboard, and a weekly goal gives everyone a reason to come back. You run it all with groupadd, newgrp and gpasswd.
Latest dispatches
9 in the archiveGames Are Small Systems: Learning Automation Through Play
CLI-Games turns selected games into durable Bash workspaces where a repeated move can become a script, a policy, and inspectable evidence.
Free Browser CTF Training: From Linux Basics to Live Flags
A terminal-first CTF path for learning Linux security in your browser, with open practice, optional guidance, and live Range challenges.
Every Player Is a Host: How Social Works on CLI-Games
CLI-Games replaces friend requests, DMs, and privacy toggles with hosts, real commands, firewall rules, and network logs.
No Downloads. No Logins. No Paywall: CTF Training in the Browser
A look inside the browser-based training labs that teach real command-line and security skills without a VPN, virtual machine, account, or subscription.
The Range is Live: Daily CTF on Real Infrastructure
The Range puts a shared vulnerable Linux target online for a new capture-the-flag challenge every day.
Wire Report #2: We Decompiled the Malware Our Honeypot Caught
Our honeypot captured 16 malware samples in one week. We unpacked, decompiled, and reverse-engineered them. Here's what's inside three active botnets — and what their source code reveals about how attacks actually work.
Wire Report #1: Inside 6,625 SSH Connection Attempts in 24 Hours
We pointed a server at the internet and watched. In 24 hours, 297 unique IPs launched 6,625 connection attempts. Here's what they tried, what they were after, and what you can learn from it.
Meet Clide, the Deliberately Unhelpful AI Assistant
Most AI assistants are eager to help. Clide isn't. Here's why that's the point.
Why CTF Starts at the Command Line
Before the exploit chains and competitions, get comfortable with the shell. CLI-Games starts with the commands and habits that serious CTF work depends on.