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Marcin Hoppe

Learn how to write more secure JavaScript code. This course will teach you how to find, fix, and prevent vulnerabilities caused by unique JavaScript issues such as prototype pollution, dynamic typing bugs, and code injection attacks.

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Learn how to write more secure JavaScript code. This course will teach you how to find, fix, and prevent vulnerabilities caused by unique JavaScript issues such as prototype pollution, dynamic typing bugs, and code injection attacks.

Complex Web applications contain a lot of JavaScript code. Security of those applications depends on how robust this code is. In this course, JavaScript Security: Best Practices, you’ll learn how to improve the security of your JavaScript code. First, you’ll explore how exploiting the dynamic type system may lead to information disclosure vulnerabilities. Next, you’ll discover how JavaScript dynamic code execution functions can allow attackers to run arbitrary code within your application. Finally, you’ll learn how abusing prototypal inheritance may change the behavior of your application in unexpected ways. When you’re finished with this course, you’ll have the skills and knowledge of JavaScript security best practices needed to protect your web applications against attackers.

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What's inside

Syllabus

Course Overview
Understanding JavaScript Security
Preventing Code Injection Attacks
Defending against Prototype Pollution
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Testing Your Code

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Teaches a set of skills and knowledge needed to prevent JavaScript vulnerabilities
Examines unique JavaScript risks, such as prototype pollution and DOM attacks
Strengthens a foundation for intermediate to advanced JavaScript developers

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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in JavaScript Security: Best Practices with these activities:
Review prototype patterns
Reinforce your understanding of prototype patterns to provide a strong foundation for the course's focus on JavaScript security.
Show steps
  • Read online documentation and tutorials on prototype patterns in JavaScript.
  • Practice creating and using prototype patterns in your own JavaScript code.
  • Complete online coding challenges or exercises on prototype patterns.
Practice basic JavaScript syntax
Refresh your understanding of JavaScript syntax to ensure a solid foundation for the course.
Show steps
  • Review JavaScript variables, data types, and operators.
  • Practice writing simple JavaScript functions.
Organize notes and study materials
Combine, arrange, and evaluate notes, assignments, and quizzes to begin building a comprehensive knowledge base for the course content.
Browse courses on Coding Practices
Show steps
  • Gather materials from all available sources including online, lectures, and the syllabus
  • Organize materials by topic and label accordingly
  • Review organized materials to prepare for upcoming lessons
14 other activities
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Gather resources on JavaScript security
Compile a list of resources on JavaScript security to help you stay up-to-date on the latest threats and best practices.
Show steps
  • Search for articles, blog posts, and videos on JavaScript security
  • Bookmark or save the resources for future reference
Follow tutorials on JavaScript security best practices
Complement your understanding by following online tutorials that provide in-depth coverage of JavaScript security best practices.
Show steps
  • Identify reputable online tutorials or courses on JavaScript security.
  • Follow the tutorials and complete the exercises to reinforce your learning.
  • Apply the best practices covered in the tutorials to your own JavaScript code.
Learn about OWASP Top 10 JavaScript vulnerabilities
Review the OWASP Top 10 JavaScript vulnerabilities and learn how to protect against them.
Browse courses on OWASP Top 10
Show steps
  • Read the OWASP Top 10 JavaScript vulnerabilities
  • Watch video tutorials on each vulnerability
  • Take quizzes to test your understanding
Participate in online forums
Engage in online discussion forums to connect with peers, share knowledge, and reinforce understanding of course concepts.
Browse courses on JavaScript
Show steps
  • Join relevant online forums and communities
  • Actively participate in discussions, ask questions, and share insights
  • Provide support and guidance to other learners
  • Reflect on and apply knowledge gained through forum interactions
Practice identifying and fixing JavaScript vulnerabilities
Work through a series of exercises that challenge you to identify and fix common JavaScript vulnerabilities.
Browse courses on Secure Coding
Show steps
  • Find and fix prototype pollution vulnerabilities
  • Find and fix dynamic typing vulnerabilities
  • Find and fix code injection vulnerabilities
Identify and fix prototype pollution
Develop your ability to identify and mitigate prototype pollution vulnerabilities, a common attack vector in JavaScript applications.
Show steps
  • Review the theory and principles behind prototype pollution in JavaScript.
  • Analyze code examples and identify potential prototype pollution vulnerabilities.
  • Practice fixing prototype pollution vulnerabilities in JavaScript code.
  • Complete online coding challenges or exercises on prototype pollution.
Prevent code injection attacks
Enhance your skills in preventing code injection attacks, a critical aspect of JavaScript security.
Browse courses on Code Injection
Show steps
  • Review the different types of code injection attacks and how they work in JavaScript.
  • Learn and practice using input validation and sanitization techniques.
  • Implement code injection prevention measures in your own JavaScript code.
  • Complete online coding challenges or exercises on code injection prevention.
Practice writing secure JavaScript code
Engage in repetitive exercises to reinforce understanding and enhance proficiency in writing secure JavaScript code.
Browse courses on Code Injection
Show steps
  • Identify common vulnerabilities and exploit techniques
  • Write code to demonstrate the exploitation of these vulnerabilities
  • Implement security measures and techniques to mitigate these vulnerabilities
  • Test and evaluate the effectiveness of these security measures
Create a secure JavaScript web application
Build a full-stack JavaScript web application that demonstrates your understanding of the concepts covered in the course.
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Show steps
  • Design the application architecture
  • Implement the front-end and back-end
  • Test the application for security vulnerabilities
  • Deploy the application
Write a blog post about JavaScript security best practices
Share your knowledge of JavaScript security best practices by writing a blog post.
Show steps
  • Choose a topic related to JavaScript security
  • Research the topic and gather information
  • Write the blog post
  • Publish the blog post
Build a secure JavaScript application
Apply your knowledge and skills by building a JavaScript application that incorporates the security principles learned in the course.
Show steps
  • Design and plan the architecture of your secure JavaScript application.
  • Implement input validation, sanitization, and other security measures in your code.
  • Test your application thoroughly for vulnerabilities and security issues.
  • Document and share your application, highlighting the security features implemented.
Follow industry blogs and news
Explore recommended coding blogs and news websites to supplement classroom learning with real-world applications of concepts.
Browse courses on Best Practices
Show steps
  • Identify and subscribe to reputable industry blogs and news sources
  • Regularly read and engage with content to stay updated on trends and best practices
  • Apply new knowledge and insights to course projects and assignments
Develop a security testing framework
Create a comprehensive framework to test and evaluate the security of JavaScript code and web applications.
Browse courses on Testing
Show steps
  • Identify security requirements and testing criteria
  • Design and develop test cases to assess vulnerabilities
  • Implement the testing framework and automate testing processes
  • Analyze test results and identify areas for improvement
  • Refine and enhance the testing framework based on insights gained
Contribute to open-source JavaScript projects
Contribute to the development and maintenance of open-source JavaScript projects to gain practical experience and enhance skills.
Browse courses on JavaScript
Show steps
  • Identify reputable open-source JavaScript projects
  • Review project documentation and codebase
  • Identify areas for improvement or contribution
  • Submit pull requests with code changes and improvements
  • Engage with project maintainers and the community

Career center

Learners who complete JavaScript Security: Best Practices will develop knowledge and skills that may be useful to these careers:
Web Developer
The JavaScript Security: Best Practices course is designed to help you write more secure JavaScript code. This course will help you learn how to find, fix, and prevent vulnerabilities caused by unique JavaScript issues such as prototype pollution, dynamic typing bugs, and code injection attacks. These skills are essential for any web developer who wants to build secure and reliable web applications.
Software Engineer
The JavaScript Security: Best Practices course can be useful for software engineers who want to learn how to write more secure JavaScript code. This course will help you understand how to prevent code injection attacks, defend against prototype pollution, and test your code for security vulnerabilities. These skills are essential for any software engineer who wants to build secure and reliable software applications.
Security Researcher
The JavaScript Security: Best Practices course may be useful for security researchers who want to learn how to identify and exploit security vulnerabilities in JavaScript code. This course will help you understand how to find and fix vulnerabilities caused by prototype pollution, dynamic typing bugs, and code injection attacks. These skills are essential for any security researcher who wants to develop new ways to protect web applications from cyber attacks.
Information Security Analyst
The JavaScript Security: Best Practices course may be useful for information security analysts who want to learn how to identify and mitigate security vulnerabilities in JavaScript code. This course will help you understand how to find and fix vulnerabilities caused by prototype pollution, dynamic typing bugs, and code injection attacks. These skills are essential for any information security analyst who wants to protect web applications from cyber attacks.
Security Engineer
The JavaScript Security: Best Practices course may be useful for security engineers who want to learn how to write more secure JavaScript code. This course will help you understand how to prevent code injection attacks, defend against prototype pollution, and test your code for security vulnerabilities. These skills are essential for any security engineer who wants to build secure and reliable web applications.
Penetration Tester
The JavaScript Security: Best Practices course may be useful for penetration testers who want to learn how to identify and exploit security vulnerabilities in JavaScript code. This course will help you understand how to find and fix vulnerabilities caused by prototype pollution, dynamic typing bugs, and code injection attacks. These skills are essential for any penetration tester who wants to be able to test the security of web applications.
Cybersecurity Consultant
The JavaScript Security: Best Practices course may be useful for cybersecurity consultants who want to learn how to help their clients protect their web applications from cyber attacks. This course will help you understand how to identify and mitigate security vulnerabilities in JavaScript code. These skills are essential for any cybersecurity consultant who wants to be able to provide valuable advice to their clients.
Security Analyst
The JavaScript Security: Best Practices course may be useful for security analysts who want to learn how to identify and mitigate security vulnerabilities in JavaScript code. This course will help you understand how to find and fix vulnerabilities caused by prototype pollution, dynamic typing bugs, and code injection attacks. These skills are essential for any security analyst who wants to be able to protect web applications from cyber attacks.
Front-End Developer
The JavaScript Security: Best Practices course may be useful for front-end developers who want to learn how to write more secure JavaScript code for web applications. This course will help you understand how to prevent code injection attacks, defend against prototype pollution, and test your code for security vulnerabilities. These skills are essential for any front-end developer who wants to build secure and reliable web applications.
Cloud Security Engineer
The JavaScript Security: Best Practices course may be useful for cloud security engineers who want to learn how to write more secure JavaScript code for cloud applications. This course will help you understand how to prevent code injection attacks, defend against prototype pollution, and test your code for security vulnerabilities. These skills are essential for any cloud security engineer who wants to build secure and reliable cloud applications.
Ethical Hacker
The JavaScript Security: Best Practices course may be useful for ethical hackers who want to learn how to identify and exploit security vulnerabilities in JavaScript code. This course will help you understand how to find and fix vulnerabilities caused by prototype pollution, dynamic typing bugs, and code injection attacks. These skills are essential for any ethical hacker who wants to be able to help organizations protect their web applications from cyber attacks.
Full-Stack Developer
The JavaScript Security: Best Practices course may be useful for full-stack developers who want to learn how to write more secure JavaScript code for web applications. This course will help you understand how to prevent code injection attacks, defend against prototype pollution, and test your code for security vulnerabilities. These skills are essential for any full-stack developer who wants to build secure and reliable web applications.
DevOps Engineer
The JavaScript Security: Best Practices course may be useful for DevOps engineers who want to learn how to write more secure JavaScript code for CI/CD pipelines. This course will help you understand how to prevent code injection attacks, defend against prototype pollution, and test your code for security vulnerabilities. These skills are essential for any DevOps engineer who wants to build secure and reliable CI/CD pipelines.
Blockchain Developer
The JavaScript Security: Best Practices course may be useful for blockchain developers who want to learn how to write more secure JavaScript code for blockchain applications. This course will help you understand how to prevent code injection attacks, defend against prototype pollution, and test your code for security vulnerabilities. These skills are essential for any blockchain developer who wants to build secure and reliable blockchain applications.
Software Architect
The JavaScript Security: Best Practices course may be useful for software architects who want to learn how to design and build more secure web applications. This course will help you understand how to prevent code injection attacks, defend against prototype pollution, and test your code for security vulnerabilities. These skills are essential for any software architect who wants to build secure and reliable web applications.

Reading list

We've selected eight books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in JavaScript Security: Best Practices.
Comprehensive guide to web application security, covering a wide range of vulnerabilities, including JavaScript-related issues. The hands-on approach and real-world examples make it a valuable resource for anyone wanting to learn more about JavaScript security.
Is considered a classic in the JavaScript community and provides a deep dive into the language's core concepts and best practices. It's highly recommended for anyone who wants to improve their understanding of JavaScript and write more secure code.
Provides a comprehensive overview of JavaScript and jQuery, covering both the basics and advanced concepts. It's a valuable resource for developers who want to improve their understanding of JavaScript and write more efficient code.
Provides a comprehensive overview of jQuery, a popular JavaScript library. It covers advanced topics such as event handling, AJAX, and plugin development, making it a valuable resource for developers who want to get the most out of jQuery.
This comprehensive book provides an in-depth look at the JavaScript language, covering everything from the basics to advanced topics such as closures and functional programming. It's a valuable reference for developers who want to master the language and write more effective code.
Provides a collection of practical tips and techniques for writing effective JavaScript code. It covers a wide range of topics, including security, performance, and maintainability, making it a valuable resource for developers of all levels.
Provides a collection of common JavaScript design patterns. It covers a wide range of patterns, including those that are particularly useful for writing secure code. It's a valuable resource for developers who want to improve the quality and maintainability of their code.
Provides a comprehensive overview of JavaScript for web developers. It covers a wide range of topics, including security, performance, and testing, making it a valuable resource for developers of all levels.

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