Bug bounty from scratch, no paywalls
The most common vulnerabilities explained with real writeups and copy-paste payloads. No fabricated testimonials, no made-up metrics.
- Common web vulnerabilities (XSS, IDOR, Open Redirect, Information Disclosure)
- Real writeups with documented bounties (€500 — €1,200)
- Free tools (Burp Community, ZAP, DevTools)
- How to write a report that passes triage
API keys exposed in public HTML — $2,000 without a single bypass
A productivity platform shipped a third-party CMS token in window.CONFIG. Anyone with DevTools could download paid templates. How to hunt this pattern in any SPA app.
All beginner-level articles
17 articles
API keys exposed in public HTML — $2,000 without a single bypass
A productivity platform shipped a third-party CMS token in window.CONFIG. Anyone with DevTools could download paid templates. How to hunt this pattern in any SPA app.
CSRF (Cross-Site Request Forgery) — fully explained with bypasses
CSRF: how it's exploited, common defenses (tokens, SameSite, Origin), bypasses (method change, JSON, double-submit, content-type) and where to hunt it in any app.
IDOR in a newsletter API — the UI hides it, the API hands it over
An endpoint with no server-side authorization check. A public parameter in the URL. Access to the subscriber list of any newsletter on a professional social network.
Basic recon methodology — from the domain to the vulnerable endpoints
The minimal recon pipeline for bug bounty: subdomain enum, live host discovery, URL collection, parameter discovery. Free tools and execution order.
What is bug bounty? A complete guide to understanding how it works
Bug bounty explained: programs, platforms, types of vulnerabilities, how you get paid, duplicate ratios and why some hunters make a living from it.
Stored XSS in template names — from the most boring field to domain takeover
A template title field, unsanitized, in a session with permissions over domains. A real €1,200 bounty. How to find XSS where nobody looks.
HackerOne vs Bugcrowd vs YesWeHack vs Intigriti — practical 2026 comparison
Real differences between the 4 bug bounty platforms: payout speed, triage quality, reputation system, public vs private programs and where the money is.
Burp Suite — setup from scratch for bug bounty (Community + Professional)
Installation, proxy + CA cert setup, target scope, essential extensions and workflow to start hunting with Burp Suite today.
Client-side JavaScript analysis — endpoints, secrets and source maps
Extracting hidden endpoints from JS bundles, secret detection, source map analysis and dynamic instrumentation with Frida to audit client-side logic.
How to write a bug bounty report that gets accepted — structure and common mistakes
The ideal structure of a bug bounty report: title, summary, impact, steps to reproduce, PoC, remediation. The 10 mistakes that get your report rejected.
LFI — Local File Inclusion: payloads, filter bypass, log poisoning and RCE
Path traversal, null-byte injection, double encoding, PHP wrappers (filter, data, expect, phar), log poisoning and escalating LFI to RCE on PHP/Java/Node stacks.
Complete recon — subdomains, fingerprinting, ASN and origin IPs
A practical recon methodology for bug bounty: passive/active subdomain enumeration, fingerprinting, ASN mapping, origin IPs to bypass the WAF and git history mining.
Security headers checklist 2026 — CSP, HSTS, X-Frame, Referrer-Policy and more
A complete audit of the HTTP security headers every modern application should have: real examples, correct configuration, common mistakes and how to report them.
Services checklist — first touch on any target (SSH, FTP, SMB, NFS, Redis, Mongo, RDP)
A practical first-enumeration checklist for the 15 most common services in pentesting: ports, default credentials, typical exploits and misconfigurations.
Cookie flags — Secure, HttpOnly, SameSite and why they matter
HttpOnly blocks XSS-to-cookie, Secure forces HTTPS, SameSite kills CSRF. How they break and what to report when they're missing on sensitive cookies.
Information Disclosure — the 12 highest-paying patterns
API keys in HTML, debug endpoints, verbose errors, JS bundles with secrets, exposed .git, header leaks. How to find it and why it's fixed fast and paid.
IP leak via a chat GIF — Client-Side Request Forgery + Information Disclosure
A social network didn't validate the URL of a GIF sent in chat. Sending a GIF revealed the victim's IP, operating system, phone model and device ID.
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- in bounties practiced
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