6 lessons
Nmap for Beginners
Scan your own network, read the results, and understand what every port state means — one command at a time.
Explore the learning path →Understand the threat. Build the skill.
Security, put into practice.
Daily cybersecurity briefs and hands-on beginner tutorials. Every source linked.
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7 Critical Security Fixes You Need Today
7 stories: SonicWall SMA1000 Series appliances; Bricksforge WordPress plugin; Atlassian Data Center products; Citrix NetScaler ADC and NetScaler Gateway;…
Tutorials — start here
Beginner-friendly lessons. Real tools. Safe practice.
6 lessons
Web Application Security for Beginners
Five classic web flaws, exploited live in a safe lab, and how defenders stop each one.
Explore the learning path →6 lessons
The 10 Commands
Ten commands per topic that security beginners actually use, shown working.
Explore the learning path →4 lessons
Explained Live
One attack technique per video, shown happening, then how to defend against it.
Explore the learning path →2 lessons
Wireshark for Beginners
Capture traffic and learn to spot what should not be there.
Explore the learning path →Newest lessons
· Lesson 7
The 10 curl Commands Every Security Tester Uses in 2026 →
Every web app you have ever used will tell you things it should not, if you ask it the right way. No browser, no scanner, no special tools. Just curl,…
· Lesson 2
Wireshark for Beginners Part 2 — Spot Suspicious Traffic on Your Network →
Look at these five numbers. Something on this computer is quietly phoning home every two seconds, like clockwork, and Wireshark just caught it.
· Lesson 1
Wireshark Packet Sniffing for Absolute Beginners — Catching a Plaintext Login →
Watch the terminal. In a few seconds you're going to watch a username and password cross the network in plain, readable text, caught live with nothing…
· Lesson 11
10 Linux Commands That Expose Hidden Malware →
You do not need antivirus software to notice something is wrong on a Linux system. You need ten ordinary commands, and today we run every one of them for…
· Lesson 4
The 10 Linux Commands Every Security Beginner Uses in 2026 →
Ten ordinary commands are the toolkit every security beginner actually lives in — not fancy exploits, just knowing your way around a Linux terminal.…
· Lesson 3
Practical Malware Analysis: The 10 Commands You Need in 2026 →
You do not need a malware lab to start analyzing a suspicious file. You need ten ordinary Linux commands, and today we run every one of them for real, on…
Recent briefs
Citrix NetScaler ADC Attacks Continue + 4 More Fixes5 stories: Citrix NetScaler ADC and NetScaler Gateway; SonicWall SMA1000; Citrix NetScaler ADC and NetScaler Gateway; Ricardo (SMG Swiss Marketplace…Fortinet FortiMail Under Active Attack + 3 More Fixes4 stories: Fortinet FortiMail; Citrix NetScaler ADC and NetScaler Gateway; Cisco NX-OS; Microsoft Exchange Server.Multiple Products Under Active Attack + 6 More Fixes7 stories: Multiple Products (ProFTPD, ONLYOFFICE, Strapi, Apache Struts, ISC BIND); MonsterCloud; US Critical Infrastructure Sectors; Multiple Atlassian…
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