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Introduction to HTML5 Security

Course Description

This course introduces the security model of the web and builds on top of that. The core focus of the course is HTML5, both its weaknesses and its strengths. We’ll talk about how attackers abuse legitimate interaction patterns in the browser and how to use various browser mechanisms for security. At the end, learners will have a good understanding of the security model of the web so they can spot potential security issues and implement appropriate defenses.

Learning Objectives

Explain the isolation boundaries enforced by modern browsers
Securely enable limited interactions between isolated contexts
Understand how UI redressing and tabnabbing attacks work and how to defend against them
Implement defenses to neutralize dangerous attributes of HTML5 forms
Understand how client-side storage mechanisms enlarge the attack surface
Illustrate the danger of injection vulnerabilities using payloads other than script injection.

Details

Delivery Format: eLearning

Duration: 1 ¼ Hours

Level: Beginner

Intended Audience:

Architects
Back-End Developers
Front-End Developers

Prerequisites:

Course Outline

The Underlying Security Model

Browsing Contexts
The Concept of an Origin
Same-Origin Policy
Origin-Controlled Resources
Secure Contexts
Script Execution Contexts

Strong Isolation with iframes

Origin-Based Isolation
The Sandbox Attribute
Isolating Content from Your Own Origin with Sandboxed iframes
Sandboxing Content Directly

Communication Between Contexts

The Basics of Cross-Document Messaging
Cross-Document Messaging Security Considerations
Channel Messaging
Building a Client-Side Architecture

Tabnabbing and UI Redressing

Social Engineering Attacks
Tabnabbing Through window.opener
Traditional Clickjacking and UI Redressing Attacks
Drag-and-Drop Clickjacking Attacks
Restricting Framing as a Defense

HTML5 Form Security

New Form Capabilities
Injection Threats of Form Capabilities
Client-Side Input Validation

Advanced Injection Attacks

Dangling Markup Injection
Base Tag Injection
New XSS Attack Vectors
Script Gadgets

Client-Side Storage Mechanisms

Various Storage Mechanisms
The Storage Security Model
Security Considerations When Using Client-Side Storage

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Training

Developer Security Training

Equip development teams with the skills and education to write secure code and fix issues faster

Learn more about developer security training