Cybersecurity · Secure development

Secure development

Input validation posture, cryptography misuse pitfalls, deserialization hygiene, SSRF defenses.

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Lesson outline

  1. 13
    Sign commits with GPG keys

    Learn to sign commits with GPG keys in this Secure development tutorial. Step-by-step instructions, troubleshooting tips, and next steps.

  2. 14
    Secure development — Part 008

    Placeholder slot — edit in console (secure-development-stub-008).

  3. 15
    Secrets Outside Source Code

    Learn how to keep secrets like API keys and passwords out of your source code. This secure development lesson covers environment variables, secret managers, and hands-on steps to protect your credentials.

  4. 16
    Secure development — Part 009

    Placeholder slot — edit in console (secure-development-stub-009).

  5. 17
    Store secrets in environment variables

    Learn how to store secrets in environment variables to avoid hardcoding credentials in your code. This lesson covers the core concept, step-by-step implementation, best practices, and common pitfalls, with a hands-on exercise to reinforce learning.

  6. 18
    Secure development — Part 010

    Placeholder slot — edit in console (secure-development-stub-010).

  7. 19
    Use python-dotenv safely

    Learn how to use python-dotenv securely: load environment variables without exposing secrets, avoid common pitfalls, and follow best practices for managing configuration in development.

  8. 20
    Secure development — Part 011

    Placeholder slot — edit in console (secure-development-stub-011).

  9. 21
    Encrypt Secrets with keyring

    Learn to encrypt secrets with the keyring library in this Secure development tutorial — hands-on steps, troubleshooting, and what to study next.

  10. 22
    Secure development — Part 012

    Placeholder slot — edit in console (secure-development-stub-012).

  11. 23
    Pydantic Input Validation

    Validate user input with pydantic in this Secure development tutorial — learn to enforce data integrity and prevent malformed input in Python apps.

  12. 24
    Secure development — Part 013

    Placeholder slot — edit in console (secure-development-stub-013).

    Secure development — step-by-step tutorials

    What you will find here

    This track walks through secure development in order — each lesson is server-rendered HTML you can read without JavaScript. Follow the outline, then practice in the browser IDE when a lesson links to runnable code.

    Tutorials vs quizzes and code samples

    Tutorials teach in sequence. For quick checks use quizzes. For copy-paste snippets see code samples. For deeper reading browse articles.