Tech Skills

Cybersecurity

Ethical hacking, penetration testing, network security, CTFs and defensive security

31,676
lessons
Skills in this topic
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Security Basics
beginner
Fix OWASP top 10 vulnerabilities
Cryptography Fundamentals
intermediate
Explain how digital signatures prevent tampering
AI Security
intermediate
Identify and patch prompt injection vulnerabilities
Network Security
intermediate
Configure a firewall with proper inbound/outbound rules
Ethical Hacking & Pen Testing
intermediate
Conduct a full pen test with Kali Linux
Cloud Security
intermediate
Implement IAM least-privilege policies on AWS/GCP
Incident Response
intermediate
Build an incident response playbook
Security Compliance
intermediate
Map controls for SOC 2 Type II compliance
Defensive AI
advanced
Build an AI-powered log anomaly detector
All Reads (23,865) Articles (12899)Blog Posts (8641)Tutorials (830)Research Papers (67)News (1428)
An API Key Is Not Delegated Authority for an AI Agent
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2h ago
An API Key Is Not Delegated Authority for an AI Agent
Handing an agent your API key gives it a bearer credential, not scoped, revocable authority. Here’s what breaks, and what fixes it. Continue reading on Medium »
The Snitch in Your Pocket
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2h ago
The Snitch in Your Pocket
You didn’t sell your location to the government. Your flashlight app did. Continue reading on Medium »
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2h ago
HackerDNA CTF Write-up: Hidden CMS Breach
By Pricilla Yin @pricilla.yin | Completed August 2026 Continue reading on Medium »
Sixty-Two Seconds
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 3h ago
Sixty-Two Seconds
His password was correct. His MFA worked. He changed his password. The attacker stayed for hours. The whole thing was probably generated. Continue reading on Me
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 6h ago
They Didn’t Find a Bug in Windows Defender. They Found a Feature.
By Shumail Seyar — Cybersecurity Analyst | SOC Analyst | Researcher | UET Peshawar Continue reading on Medium »
Chapter 4 Azure Fundamentals for Red Teams
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 6h ago
Chapter 4 Azure Fundamentals for Red Teams
Part of the “Attack → Detect → Govern” series. Read the intro here, Chapter 1 here, Chapter 2 here, and Chapter 3 here. Continue reading on Medium »
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 6h ago
OWASP (Open Web Application Security Project) is a non-profit foundation dedicated to improving…
The OWASP Top 10 Security Risks Continue reading on Medium »
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 6h ago
Healthcare Cybersecurity Has a Visibility Problem: Why More Security Tools Are Not Enough
Building a stronger healthcare security program requires more than deploying scanners — it requires connecting vulnerability discovery… Continue reading on Medi
Grok Chat History Leak: Cryptographic Context Injection
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 6h ago
Grok Chat History Leak: Cryptographic Context Injection
Strategic Context of Cryptographic Context Injection (CCI) Continue reading on Medium »
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 8h ago
Enterprise Cybersecurity Assessment Services India: A Complete 2026 Guide
Large organizations don’t run one website and one database — they run dozens of applications, multiple cloud environments, third-party… Continue reading on Medi
Deception Technologies: Turning Attacker Speed Into Defender Advantage
Forbes Innovation 🔐 Cybersecurity ⚡ AI Lesson 11h ago
Deception Technologies: Turning Attacker Speed Into Defender Advantage
In other words, deception turns the attacker’s automation against them.
The $15 Identity
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 13h ago
The $15 Identity
How synthetic customers pass liveness checks — and why the fix isn’t a better model Continue reading on Medium »
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 15h ago
5 Best Data Encryption Services for Small Businesses
In 2026, organizations across the U.S.A., including SaaS, finance, healthcare, and technology companies, are prioritizing data encryption… Continue reading on M
Become a Hacker - TryHackMe Writeup
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 16h ago
Become a Hacker - TryHackMe Writeup
Link: https://tryhackme.com/room/becomeahacker Continue reading on Medium »
Deploying Wazuh with Docker (Single/Multi-Node)
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 16h ago
Deploying Wazuh with Docker (Single/Multi-Node)
Deploying Wazuh SIEM with Docker: A Practical Guide Continue reading on Medium »
Deepfake Candidates: What You’re Up Against in 2026
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 18h ago
Deepfake Candidates: What You’re Up Against in 2026
The candidate on your screen smiles, answers naturally, and sounds qualified. But the face may not belong to the person speaking, and the… Continue reading on M
eBPF Fundamentals: How You Get Code Running Inside the Linux Kernel Without Crashing the Box (Part…
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 20h ago
eBPF Fundamentals: How You Get Code Running Inside the Linux Kernel Without Crashing the Box (Part…
This is the second post in a series unpacking Massimo Tumolo’s 2018 Politecnico di Torino master’s thesis, “Towards a faster Iptables with… Continue reading on
30 Essential Windows CMD Commands for Cybersecurity and Networking
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 20h ago
30 Essential Windows CMD Commands for Cybersecurity and Networking
If you work in IT, networking, system administration, or cybersecurity, the Windows Command Prompt (CMD) is one of the most useful tools… Continue reading on Me
DNS based ad and tracker blocking & Firewall configuration
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 20h ago
DNS based ad and tracker blocking & Firewall configuration
I wanted to understand what was actually happening behind the scenes instead of just knowing the theory, so I started with the basics and… Continue reading on M
Anti-Detect Browser vs. Regular Browser Profiles: What’s the Real Difference?
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 22h ago
Anti-Detect Browser vs. Regular Browser Profiles: What’s the Real Difference?
At first, a Chrome profile and an anti-detect browser profile can look like the same thing. Continue reading on Medium »
Subdomain Takeover: When a Dead DNS Record Becomes Your Entry Point
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 22h ago
Subdomain Takeover: When a Dead DNS Record Becomes Your Entry Point
A forgotten CNAME record is sometimes all it takes to hijack part of a domain. Subdomain takeover doesn’t need a zero-day. It only needs… Continue reading on FM
O custo invisível do seu clique: como a sua rotina virou a mercadoria mais valiosa (e perigosa) do…
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 22h ago
O custo invisível do seu clique: como a sua rotina virou a mercadoria mais valiosa (e perigosa) do…
Você abre o celular logo cedo, aceita os termos de uso de um novo aplicativo sem ler, rola o feed por cinco minutos e segue o dia. Parece… Continue reading on M
AI Has Changed Cybersecurity GRC: The New Risk Isn’t Just AI, It’s Everything AI Can Access
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 22h ago
AI Has Changed Cybersecurity GRC: The New Risk Isn’t Just AI, It’s Everything AI Can Access
For years, cybersecurity GRC was built around a relatively simple assumption: humans use systems, organizations give humans access, and… Continue reading on Med
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
How I Started My Cybersecurity Journey as a CSE Student
From my first cybersecurity bootcamp at Anna University to exploring Linux, networking and CTFs. Continue reading on Medium »
Gelişmiş Tehdit Avcılığı (Advanced Threat Hunting)
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
Gelişmiş Tehdit Avcılığı (Advanced Threat Hunting)
Hipotez Tabanlı Tespit, İleri Seviye SIEM Sorguları (KQL & SPL) ve Detection as Code Continue reading on Medium »
Fairy Law: Abusing MicrosoftSignedOnly
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
Fairy Law: Abusing MicrosoftSignedOnly
Welcome to this new Medium post. In this one we will see how a legitimate Windows process mitigation policy can be abused to globally… Continue reading on Mediu
My Cybersecurity Learning Notes: SOC, GDPR, DPDP & Dwell Time
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
My Cybersecurity Learning Notes: SOC, GDPR, DPDP & Dwell Time
As part of my cybersecurity learning journey, I’ve been revising some important concepts that are useful for SOC and cybersecurity… Continue reading on Medium »
AuraWiper: Reverse Engineering a Destructive Windows Wiper
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
AuraWiper: Reverse Engineering a Destructive Windows Wiper
MalOps.io Challenge Write-Up: Uncovering Persistence, Anti-Analysis, MBR Destruction, and Forced System Crashes Continue reading on Medium »
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
CYBER SECURITY BASICS
HEY, THIS IS MY FIRST BLOG AND I’M NEW TO THIS. SO TODAY I STARTED STUDYING CYBER SECURITY.. Continue reading on Medium »
Quantum-resistant encryption: preparing networks for the post-quantum era
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
Quantum-resistant encryption: preparing networks for the post-quantum era
NetworkTigers explores quantum-resistant encryption, its significance for network security, and what engineers need to know to prepare for… Continue reading on
How an Unsanitized Header Generated a $6,000 Bounty via Cache Poisoning
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
How an Unsanitized Header Generated a $6,000 Bounty via Cache Poisoning
When auditing web applications, developers often assume that caching layers are purely transparent infrastructure — mechanisms designed to… Continue reading on
Top Cyber Security Training Institutes in Delhi
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
Top Cyber Security Training Institutes in Delhi
Cybersecurity has become one of the most promising career fields for students who want to build a successful future in technology. With… Continue reading on Med
CTF Day 23 | North-South | Crack the Gate 2
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
CTF Day 23 | North-South | Crack the Gate 2
picoCTF Web Exploitation: North-South & Crack the Gate 2. Continue reading on Medium »
Building a Bulletproof Linux Server — Ep. #3: System Examination
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
Building a Bulletproof Linux Server — Ep. #3: System Examination
A hands-on guide to real-world Linux hardening in a virtual lab Continue reading on AWS in Plain English »
The First Thing a New Tool Asks For Is Not Your Trust
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
The First Thing a New Tool Asks For Is Not Your Trust
It asks for permission. Continue reading on Medium »
Takeover TryHackMe Write UP
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
Takeover TryHackMe Write UP
Hello let’s dive straight to the issue, Continue reading on Medium »
Playing Matchmaker
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
Playing Matchmaker
The Hidden Relationships Behind Modern Software Continue reading on MeetCyber »
How Not To Get Hacked
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
How Not To Get Hacked
Securing Your Computer Part 1 Continue reading on MeetCyber »
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
Fireflow — HackTheBox Machine Walkthrough
Today I’m sharing the methodology I followed while working through Fireflow, a machine built around a real-world Langflow RCE and, once… Continue reading on Med
Understanding IDOR: Breaching Applications by Exploiting Logic Flaws
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
Understanding IDOR: Breaching Applications by Exploiting Logic Flaws
Target: Cap (Linux — Hack The Box) Continue reading on Medium »
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 1d ago
From a Password Reset Form to Unauthenticated Database Access
How a simple password-reset endpoint became a confirmed SQL injection — and what the investigation taught me about methodology, WAFs, and… Continue reading on M
AgentGG Found 100+ Zero-Days in Open Source Software
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2d ago
AgentGG Found 100+ Zero-Days in Open Source Software
Introduction Continue reading on InfoSec Write-ups »
I Ranked 252 Disclosed IDOR Reports by Bounty. Severity Barely Mattered.
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2d ago
I Ranked 252 Disclosed IDOR Reports by Bounty. Severity Barely Mattered.
A CVSS 5.3 IDOR paid $5,000. A CVSS 9.0 account takeover paid nothing. I pulled the full records behind both — and 250 more — to see what… Continue reading on M
Ví Web3 — địa chỉ, Private Key và Seed Phrase khác nhau như thế nào?
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2d ago
Ví Web3 — địa chỉ, Private Key và Seed Phrase khác nhau như thế nào?
Một trong những nhầm lẫn nguy hiểm nhất mà người mới thường mắc phải khi bắt đầu tìm hiểu ví Web3 là không phân biệt rõ ba khái niệm: địa… Continue reading on M
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2d ago
The Dark Side of the AI Boom: Speed, Spying, and the Cost of Rapid Innovation
The pace of technological advancement over the past few years has been unprecedented. Continue reading on Medium »
A 400 Is Not a Dead End — My First Bug Bounty (€250)
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2d ago
A 400 Is Not a Dead End — My First Bug Bounty (€250)
I went hunting for SSTI. I found nothing. That “nothing” paid €250. Continue reading on Medium »
TryHackMe Walkthrough: Checkmate
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2d ago
TryHackMe Walkthrough: Checkmate
https://tryhackme.com/room/checkmate Continue reading on Medium »
Networking Fundamentals Every Pentester Must Know: The Complete Foundation
Medium · Cybersecurity 🔐 Cybersecurity ⚡ AI Lesson 2d ago
Networking Fundamentals Every Pentester Must Know: The Complete Foundation
Every exploit, every reverse shell, every Nmap scan you’ll ever run rides on top of the same networking concepts. Skip this foundation and… Continue reading on