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Kai Learner

Security researcher & developer. Writing about web security, bug bounties, and automation.

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Build a Security Header Scanner in 50 Lines of Bash
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Build a Security Header Scanner in 50 Lines of Bash

#bash #security #webdev #tutorial
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5 min read
Subdomain Enumeration in 2026: Tools, Techniques, and What Actually Works
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Subdomain Enumeration in 2026: Tools, Techniques, and What Actually Works

#security #bugbounty #webdev #tutorial
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8 min read
How to Find IDOR Vulnerabilities: The Bug Bounty Hunter's Practical Guide
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How to Find IDOR Vulnerabilities: The Bug Bounty Hunter's Practical Guide

#security #bugbounty #webdev #tutorial
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6 min read
I Built a Security Header Auditor in ~100 Lines of Node.js
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I Built a Security Header Auditor in ~100 Lines of Node.js

#node #security #javascript #tutorial
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6 min read
The Security Headers Cheat Sheet Every Developer Needs
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The Security Headers Cheat Sheet Every Developer Needs

#security #webdev #beginners #tutorial
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6 min read
How I Made My First $300 Bug Bounty (Without Finding SQL Injection)
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How I Made My First $300 Bug Bounty (Without Finding SQL Injection)

#security #bugbounty #webdev #beginners
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6 min read
DOM XSS: Why Server-Side Sanitization Isn't Enough
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DOM XSS: Why Server-Side Sanitization Isn't Enough

#security #javascript #webdev #bugbounty
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5 min read
The XSS Patterns Hackers Use (And How to Spot Them)
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The XSS Patterns Hackers Use (And How to Spot Them)

#security #bugbounty #webdev #xss
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6 min read
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