🔐 Cybersecurity

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

Cybersecurity

Filecarving with Binwalk: Homemade CTF: "A Brisk Stroll"

John Hammond Intermediate 7y ago

Cybersecurity

PHP Type Juggling: Python Web Hacking | Natas: OverTheWire (Level 23)

John Hammond Intermediate 7y ago

Cybersecurity

Disallow Redirects: Python Web Hacking | Natas: OverTheWire (Level 22)

John Hammond Intermediate 7y ago

Cybersecurity

Cross-site Session Hijacking : Python Web Hacking | Natas: OverTheWire (Level 21)

John Hammond Intermediate 7y ago

Cybersecurity

Abusing PHP Session Handlers: Python Web Hacking | Natas: OverTheWire (Level 20)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: Random Hex PHPSESSID | Natas: OverTheWire (Level 19)

John Hammond Intermediate 7y ago

Cybersecurity

Google CTF: Beginner Quest: MEDIA-DB (SQL Injection)

John Hammond Beginner 7y ago

Cybersecurity

Google CTF: Beginner Quest: GATEKEEPER (Reverse Engineering)

John Hammond Beginner 7y ago

Cybersecurity

Bruteforcing PHPSESSID: Python Web Hacking | Natas: OverTheWire (Level 18)

John Hammond Intermediate 7y ago

Cybersecurity

TIMING ATTACK SQL Injection: Python Web Hacking | Natas: OverTheWire (Level 17)

John Hammond Intermediate 7y ago

Cybersecurity

Google CTF: Beginner Quest: LETTER (Hacking PDF Files!)

John Hammond Beginner 7y ago

Cybersecurity

Python Web Hacking: BLIND SQL Injection | Natas: OverTheWire (Level 15)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: SQL Injection | Natas: OverTheWire (Level 14)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: Blind Grep & RCE | Natas: OverTheWire (Level 16)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: PHP Remote Code Execution File Upload | Natas: OverTheWire (Level 13)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: File Upload Remote Code Execution | Natas: OverTheWire (Level 12)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: PHP XOR | Natas (Level 11)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: Remote Code Execution | Natas: OverTheWire (Level 10)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: PHP Command Injection | Natas: OverTheWire (Level 9)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: PHP Base64 & Hex | Natas: OverTheWire (Level 8)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: Local File Inclusion | Natas: OverTheWire (Level 7)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: PHP Includes | Natas: OverTheWire (Level 6)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: HTTP Headers & Cookies | Natas: OverTheWire (Levels 4-5)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: robots.txt & Directory Indexing | Natas: OverTheWire (Levels 2-3)

John Hammond Intermediate 7y ago

Cybersecurity

Python Web Hacking: View Source | Natas: OverTheWire (Levels 0-1)

John Hammond Intermediate 7y ago

Cybersecurity

C++ TicTacToe Game [1] Programming The Grid

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: Brute-Force Loop | Leviathan: OverTheWire (Levels 5-6) FINALE

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: Binary & Hex | Leviathan: OverTheWire (Levels 3-4)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: Symbolic Links | Leviathan: OverTheWire (Level 2)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: strings & ltrace: Leviathan: OverTheWire (Levels 0-1)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: CTF Jail Escaping (More) | Bandit: OverTheWire (Level 25) FINALE

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: Bruteforce For Loop | Bandit: OverTheWire (Level 24)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: Shebang & Scripting | Bandit: OverTheWire (Level 23)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: SETUID Binary, Netcat & Cron | Bandit: OverTheWire (Levels 19-22)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: SSL, NMap Portscans & Diff | Bandit: OverTheWire (Levels 15-18)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: ROT13, Hexdump, SSH Private Keys | Bandit: OverTheWire (Levels 11-14)

John Hammond Intermediate 7y ago

Cybersecurity

Unicode ZERO WIDTH Spaces to HIDE SECRET MESSAGES (MITRE CTF)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: GREP & Base64 | Bandit: OverTheWire (Levels 7-10)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: Hidden Files & File Ownership | Bandit: OverTheWire (Levels 4-6)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Hacking: SSHPass & File Spaces | Bandit: OverTheWire (Levels 1-3)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Offsec Club 5/5 - Video Walkthrough (Levels 13-15)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Offsec Club 4/5 - Video Walkthrough (Levels 10-12)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Offsec Club 3/5 - Video Walkthrough (Levels 7-9)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Offsec Club 2/5 - Video Walkthrough (Levels 4-6)

John Hammond Intermediate 7y ago

Cybersecurity

Linux Offsec Club 1/5 - Video Walkthrough (Levels 1-3)

John Hammond Intermediate 7y ago

Cybersecurity

Python "netcat" Server CTF Challenge - ABYSS

John Hammond Intermediate 8y ago

Cybersecurity

PowerShell on LINUX! Installation Video

John Hammond Intermediate 8y ago

Cybersecurity

BASH ALIAS CTF Challenge built w/ Docker

John Hammond Intermediate 8y ago

📚 Coursera Courses Opens on Coursera · Free to audit

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Self-paced

Bug Bounty from Scratch

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CCNA Advanced – WAN, Security, and Network Services

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Foundations of Cybersecurity Operations

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Security and Troubleshooting Essentials

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Memory, Encryption, and Protecting Data in iOS

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Segurança de redes VPC com Cloud Next Generation Firewall

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Evaluate Your Cloud Next Generation Firewall Needs

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Advanced Network Security and Analysis

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CCNA Expert – Network Automation, Cloud, and Emerging Technologies

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Python Case Study - Cryptography

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Execution, persistence, privilege escalation and evasion

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Network Defense Essentials: Hands-On Edition

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Data Visualization & Advanced App Logic

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Making Accessible Designs

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Vulnerability Types and Concepts

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Secure Networked System with Firewall and IDS

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AI Agents for Cybersecurity

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Security-Driven Software Development

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