Progressive Web Apps (PWA)
PWA Security and Privacy Review
PWA Security and Privacy Review
This lesson adds advanced coverage to Progressive Web Apps (PWA) based on the official documentation and practical production work.
Focus for this lesson: scope, HTTPS, storage privacy, push abuse, and data retention.
Learning Goals
- Understand the core idea and when to use it.
- Apply it in a real project without breaking security or performance.
- Connect it to tests, documentation, and monitoring when needed.
Practical Example
// no sensitive data in long-lived offline caches
Documentation reference: MDN PWA and OWASP guidance.
Professional Implementation Steps
- Review boundaries and responsibilities before writing code.
- Build a small example and then apply it to a real feature.
- Add a test or smoke check that proves the behavior.
- Document the impact on maintenance and deployment.
Hands-on Practice
Apply this topic to an existing page, API, or component, then review the result for maintainability, security, performance, and user experience.
Production addition: do not judge success only by running the example. Judge it by how clear, testable, and maintainable the decision is.
Avoid copying documentation patterns blindly. Tie every option to a clear project reason.
Summary
Add this topic to your toolbox as an engineering decision that can be explained, tested, and reviewed.