00 Start Here — Bug Bounty Hunter

Welcome to the Bug Bounty Hunter Career Learning Path.

Bug bounty hunting is not simply:

Run Scanner
      ↓
Find Vulnerability
      ↓
Get Paid

Professional bug bounty hunting requires a structured methodology combining:

Reconnaissance

Web Security

API Security

Mobile Security

Vulnerability Research

Manual Testing

Exploitation

Automation

Evidence Collection

Impact Analysis

Reporting

Throughout this learning path, you will learn how professional security researchers move from:

Target
      ↓
Reconnaissance
      ↓
Attack Surface
      ↓
Testing
      ↓
Vulnerability
      ↓
Validation
      ↓
Impact
      ↓
Evidence
      ↓
Report

The objective is not simply to find vulnerabilities.

The objective is to become capable of:

Finding

Validating

Understanding

Demonstrating

and

Reporting

Real Security
Vulnerabilities

responsibly and professionally.

Your Mission

Throughout this learning path, you will operate as a:

Bug Bounty Hunter

Security Researcher

Web Security Tester

working against:

Authorized

Lab

CTF

Training

Bug Bounty

environments.

You will learn how to approach a target systematically rather than randomly testing vulnerabilities.

Your methodology will evolve into:

Understand Scope
      ↓
Map Attack Surface
      ↓
Discover Assets
      ↓
Identify Technologies
      ↓
Enumerate Functionality
      ↓
Build Attack Hypotheses
      ↓
Test Safely
      ↓
Validate Findings
      ↓
Determine Impact
      ↓
Collect Evidence
      ↓
Write Report

Responsible Security Research

Before learning any technical technique, understand one fundamental rule:

Only test systems you are explicitly authorized to test.

Bug bounty programs define exactly what researchers are permitted to test.

Always review:

Program Scope

In-Scope Assets

Out-of-Scope Assets

Testing Restrictions

Safe Harbor

Rate Limits

Prohibited Techniques

Disclosure Requirements

before testing.

Never assume that because a system is publicly accessible:

You Have
Permission
to Test It

Bug Bounty vs Penetration Testing

These activities overlap technically but operate differently.

Penetration Testing

Usually involves:

Defined Client

Defined Engagement

Defined Scope

Defined Testing Window

Contractual Authorization

Formal Deliverables

Bug Bounty Hunting

Usually involves:

Published Program

Defined Scope

Continuous Research

Researcher Competition

Vulnerability Submission

Triaging

Duplicate Handling

Severity Evaluation

Potential Reward

Both require:

Technical Skill
+
Ethics
+
Evidence
+
Professional Reporting

What Makes a Good Bug Bounty Hunter?

Successful researchers develop more than exploitation skills.

You need:

Curiosity

Patience

Persistence

Technical Depth

Analytical Thinking

Pattern Recognition

Creativity

Documentation

Communication

Most importantly:

Think Like
an Attacker

Communicate Like
a Professional

Learning Path Architecture

Your Bug Bounty Hunter path follows this progression:

00 Start Here
      ↓
01 Bug Bounty Foundations
      ↓
02 Web Security
      ↓
03 API Security
      ↓
04 Mobile Security
      ↓
05 Advanced Web Exploitation
      ↓
06 Automation & Recon
      ↓
07 Reporting
      ↓
08 Live Hunting Methodology
      ↓
09 Portfolio Projects
      ↓
10 Interview Preparation
      ↓
11 Career Resources
      ↓
AI for Bug Bounty Hunters

Module 01 — Bug Bounty Foundations

You will first build the foundation required to operate as a responsible security researcher.

You will learn:

Bug Bounty Ecosystem

Responsible Disclosure

Program Rules

Scope

Safe Harbor

Research Ethics

Testing Methodology

Lab Environment

Research Workflow

Note Taking

The goal is to understand:

How Bug Bounty
Actually Works

before performing advanced testing.

Module 02 — Web Security

Web applications represent one of the largest areas of bug bounty research.

You will learn to investigate vulnerabilities involving:

Authentication

Authorization

Sessions

Access Control

Input Validation

XSS

SQL Injection

CSRF

SSRF

File Upload

Path Traversal

Business Logic

Information Disclosure

You will move beyond vulnerability definitions and learn:

Where to Look

What to Test

Why It Matters

How to Validate It

Module 03 — API Security

Modern applications depend heavily on APIs.

You will investigate:

REST APIs

GraphQL

Authentication

Authorization

Object-Level Access

Function-Level Access

Mass Assignment

Rate Limiting

Token Handling

API Enumeration

Sensitive Data Exposure

You will learn to think in terms of:

Endpoint
      ↓
Method
      ↓
Parameter
      ↓
Identity
      ↓
Authorization
      ↓
Business Logic

Module 04 — Mobile Security

Many bug bounty programs include:

Android

iOS

Mobile APIs

You will learn the foundations of:

Mobile Application Architecture

Application Traffic

API Communication

Local Storage

Authentication

Tokens

Application Configuration

Mobile Attack Surface

The focus remains on authorized security research.

Module 05 — Advanced Web Exploitation

After developing strong foundations, you will investigate more complex attack scenarios.

You will study:

Advanced Access Control

Authentication Chains

SSRF Attack Paths

Request Smuggling Concepts

Race Conditions

Advanced Business Logic

Web Cache Issues

Complex Authorization

Vulnerability Chaining

The objective becomes:

Finding Relationships
Between Weaknesses

rather than testing vulnerabilities individually.

Module 06 — Automation & Recon

Reconnaissance becomes increasingly important as programs grow.

You will learn how to organize:

Domains

Subdomains

Applications

APIs

Technologies

Endpoints

Parameters

JavaScript Assets

and use automation to assist with:

Discovery

Enumeration

Change Detection

Data Organization

Prioritization

Automation should:

Increase Coverage

not replace:

Human Analysis

Module 07 — Reporting

A vulnerability is useful only when it can be communicated clearly.

You will learn to write professional reports containing:

Title

Summary

Affected Asset

Prerequisites

Reproduction Steps

Evidence

Impact

Severity

Remediation

A strong report should allow another analyst to:

Understand
      ↓
Reproduce
      ↓
Validate
      ↓
Remediate

the vulnerability.

Module 08 — Live Hunting Methodology

This module brings everything together.

You will learn a repeatable workflow:

Read Program
      ↓
Understand Scope
      ↓
Select Target
      ↓
Recon
      ↓
Map Application
      ↓
Identify Attack Surface
      ↓
Create Hypotheses
      ↓
Test
      ↓
Validate
      ↓
Document
      ↓
Report

Instead of asking:

Which Tool
Should I Run?

you will begin asking:

How Does
This Application Work?

Where Are
Trust Boundaries?

What Assumptions
Are Developers Making?

Where Could
Authorization Fail?

What Can
Users Control?

That shift is critical.

Module 09 — Portfolio Projects

You will combine your skills into realistic projects.

Projects should demonstrate:

Reconnaissance

Application Mapping

Testing Methodology

Evidence Collection

Risk Analysis

Reporting

Your portfolio should show employers that you understand the complete:

Security Research
Lifecycle

rather than only individual tools.

Module 10 — Interview Preparation

You will prepare for roles such as:

Application Security Analyst

Security Researcher

Web Security Analyst

Penetration Tester

Junior AppSec Engineer

Vulnerability Analyst

You will practice explaining:

Vulnerabilities

Testing Methodology

Attack Paths

Impact

Mitigation

Research Projects

clearly during interviews.

Module 11 — Career Resources

Technical ability alone does not automatically create career opportunities.

You will learn how to present your experience through:

Resume

LinkedIn

GitHub

Security Portfolio

Research Write-Ups

Interview Stories

Project Documentation

Your labs become evidence of:

Practical Ability

rather than simply completed coursework.

AI for Bug Bounty Hunters

The final section introduces responsible AI-assisted security research.

You will learn where AI can help with:

Recon Data Analysis

JavaScript Analysis

Endpoint Organization

HTTP Request Analysis

Code Understanding

Payload Reasoning

Report Drafting

Research Notes

Vulnerability Hypotheses

But you will also learn:

When to Use AI

How to Use AI

How to Validate AI

When Not to Trust AI

When Human Judgment
Must Take Control

AI should support:

Researcher
Reasoning

not replace it.

The Bug Bounty Mindset

Beginners often approach testing like this:

Target
      ↓
Scanner
      ↓
Payloads
      ↓
Nothing Found
      ↓
Next Target

A stronger researcher works differently:

Target
      ↓
Understand Application
      ↓
Map Functionality
      ↓
Identify Trust Boundaries
      ↓
Understand User Roles
      ↓
Build Hypothesis
      ↓
Test Hypothesis
      ↓
Analyze Response
      ↓
Adjust Hypothesis

This is:

Hypothesis-Driven
Security Testing

Think in Attack Surface

When examining an application, identify:

Authentication

Registration

Password Reset

Profile

Account Settings

File Upload

Search

Admin Functions

Payments

APIs

Integrations

Webhooks

Mobile APIs

Each feature creates:

Potential
Attack Surface

Think in Trust Boundaries

Ask:

What Does
the Application Trust?

What Does
the User Control?

What Happens
Server-Side?

Where Does
Authorization Occur?

Can One User
Access Another
User's Data?

Can Low Privilege
Reach High Privilege?

These questions often produce better results than blindly testing payload lists.

Think in Roles

Many high-impact vulnerabilities involve:

User A

User B

Administrator

Support Agent

Vendor

Partner

API Client

Always ask:

What Can
This Role Do?

What Should
This Role Not Do?

Can That Boundary
Be Broken?

Think in Business Logic

Not every serious vulnerability requires:

SQL Injection

Remote Code Execution

XSS

Some vulnerabilities exist because:

Application Logic
Can Be Abused

Examples include:

Coupon Abuse

Payment Manipulation

Workflow Bypass

Approval Bypass

Account Takeover Paths

Privilege Escalation

Rate-Limit Abuse

Understanding the business process is therefore essential.

Build Your Research Workflow

Your standard workflow should eventually become:

Program Selection
      ↓
Scope Review
      ↓
Target Selection
      ↓
Passive Recon
      ↓
Active Recon
      ↓
Application Mapping
      ↓
Endpoint Discovery
      ↓
Parameter Discovery
      ↓
Technology Analysis
      ↓
Authentication Testing
      ↓
Authorization Testing
      ↓
Input Testing
      ↓
Business Logic Testing
      ↓
Validation
      ↓
Evidence
      ↓
Reporting

Build a Research Notebook

For every authorized target, maintain:

Target

Scope

Domains

Subdomains

Endpoints

Parameters

Technologies

User Roles

Interesting Features

Potential Vulnerabilities

Test Results

Evidence

Reports

A researcher who documents effectively can:

Return to
Previous Findings

Identify Patterns

Avoid Duplicate Work

Build Better
Attack Hypotheses

Evidence Matters

A vulnerability report should answer:

What Is Wrong?

Where Is It?

How Can It
Be Reproduced?

What Is
the Impact?

Why Does
It Matter?

Evidence may include:

HTTP Requests

HTTP Responses

Screenshots

Logs

Affected Parameters

User Roles

Application State

Never collect more data than necessary to demonstrate the issue.

Labs

Throughout this path, labs should follow:

Mission
      ↓
Environment
      ↓
Recon
      ↓
Investigation
      ↓
Validation
      ↓
Evidence
      ↓
Impact
      ↓
Report

The goal is to develop:

Repeatable
Security Research
Skills

Runbooks

You will also build repeatable runbooks for activities such as:

Web Application Recon

Authentication Testing

Authorization Testing

API Testing

Vulnerability Validation

Evidence Collection

Bug Bounty Reporting

These become your:

Personal Hunting
Methodology

Portfolio Strategy

Do not build a portfolio containing only:

Tool Screenshots

Instead demonstrate:

Problem

Methodology

Analysis

Evidence

Finding

Impact

Recommendation

A professional portfolio should show:

How You Think

not simply:

Which Tools
You Know

Progression Through the Path

Your development should look like:

Beginner
      ↓
Understand Vulnerabilities
      ↓
Practice Techniques
      ↓
Understand Applications
      ↓
Build Methodology
      ↓
Find Attack Paths
      ↓
Validate Findings
      ↓
Write Professional Reports
      ↓
Operate Independently

Career Outcomes

Skills from this learning path can support progression toward:

Bug Bounty Hunter

Security Researcher

Application Security Analyst

Web Application
Penetration Tester

API Security Tester

Junior AppSec Engineer

Vulnerability Researcher

How to Use This Learning Path

Follow the modules:

In Sequence

especially during the early stages.

For each lesson:

Learn
      ↓
Understand
      ↓
Practice
      ↓
Document

For each lab:

Perform
      ↓
Collect Evidence
      ↓
Analyze
      ↓
Write Findings

For each runbook:

Understand
      ↓
Customize
      ↓
Reuse

Rules of Engagement

Throughout the learning path:

Only Test
Authorized Systems

Respect Scope

Respect Rate Limits

Protect User Data

Avoid Unnecessary Impact

Follow Program Rules

Document Evidence

Report Responsibly

Remember:

Technical Capability
Does Not Equal
Authorization

Learning Path Success Criteria

By the end of this path, you should be able to:

understand bug bounty program rules and scope.
build an organized reconnaissance workflow.
map web application attack surfaces.
analyze authentication and session workflows.
test authorization boundaries.
investigate common web vulnerabilities.
assess API security.
understand mobile application attack surfaces.
investigate advanced web attack paths.
automate repetitive reconnaissance tasks.
validate vulnerabilities safely.
determine realistic security impact.
collect useful evidence.
write professional vulnerability reports.
build repeatable hunting methodologies.
maintain a security research portfolio.
explain your methodology during interviews.
use AI responsibly during security research.

Your Bug Bounty Hunter Journey

You are starting here:

Learn

You will progress toward:

Learn
      ↓
Practice
      ↓
Investigate
      ↓
Validate
      ↓
Report
      ↓
Hunt

The goal is not:

Know Every
Security Tool

The goal is:

Understand Systems

Find Weaknesses

Validate Impact

Communicate Clearly

Module Complete

You now understand:

What Bug Bounty Is

How the Learning
Path Is Structured

Why Scope Matters

How Professional
Researchers Think

How Labs and
Runbooks Will Work

What Skills
You Will Build

What’s Next?

➡️ Next: 01 — Bug Bounty Foundations

Before testing advanced vulnerabilities, you need a strong understanding of:

Bug Bounty Programs

Responsible Disclosure

Scope

Safe Harbor

Rules of Engagement

Research Methodology

Testing Environments

Documentation

In the next module, you will build the foundation required to operate as a:

Responsible

Methodical

Professional

Security Researcher

You will move from:

I Want to
Find Bugs

to:

I Understand
How to Conduct
Authorized Security
Research

➡️ Next: 01 — Bug Bounty Foundations