How do you keep your software safe in any programming paradigm?

In my opinion essential steps to keep your software safe include: 1.Input Validation: Implement thorough input validation to prevent malicious inputs from compromising the system. 2.Authentication and Authorization 3.Secure Data Storage 4.Secure Communication 5.Error Handling and Logging 6.Regular Updates and Patching 7.Security Testing 8.Secure Deployment and Configuration 9.Education and Training 10.Compliance with Security Standards

Adhering to SOLID principles is vital when building OO programs. For example, ensuring a child class can replace its parent class (Liskov Substitution). Avoid overengineering, don't use tools for the sake of having them; we use very little inheritance at my work, but we use polymorphism copiously as it makes sense in a variety of cases (overloaded methods remain quite clear). Extract method parameters into objects (such as EVs) in cases with > 4/5 parameters - method parameters can easily get difficult to keep track of and read. If parameters are being passed through multiple methods, carefully consider whether that's necessary - this makes it difficult to determine where the parameters have come from when examining code pre-debugging.

Liskov substitution and Inversion of control. I’d say these are extremely important principles that keep software safe and maintainable. Even when using patterns that are considered “Anti-patterns” by some (myself included). They offer separation of concerns out of the box and loose coupling. Dependency inversion would be the cherry on top. In my work we use inheritance a lot and depend on polymorphism for the majority of the toolings and services. We adhere to the said principles and I can say that maintainability is a breeze.

Ensuring software safety across programming paradigms involves several key practices: 1. Input Validation 2. Secure Coding Practices 3. Authentication and Authorization 4. Patch Management 5. Secure Communication 6. Least Privilege Principle 7. Monitoring and Logging 8. Regular Security Audits 9. Error Handling 10. Database Security 11. Dependency Scanning 12. Incident Response Plan 13. User Education 14. Security by Design

Structuring your project in micro loosely-coupled services plays a vital role. We often hear about Fat-Controllers, Slim Models, or vice-versa in the MVC pattern but the truth is what "S" in SOLID says, It's a Single-Responsibility Principle and it defines a "SOLID" base of your system. Your controller doesn't need to know the underlying functionality since its job is accepting requests and dispatching responses. Similarly, Segregating your features to unit classes with separation of concerns help you maintain your app easily and efficiently.

By designing functions that do not have side effects and operate solely on their inputs, the risk of unexpected behavior is minimized. Also employing techniques like type systems, property-based testing, and formal verification further enhances software safety in functional programming.

Similar to topic number 1, what is procedural programming improving upon? If we just assume the order of topics, it seems Procedural programming is improving over both Object-Oriented Programming and Functional Programming, which is not really the case.

Whatever programming paradigm you choice, it all ends with peer review or AI review regarding safety. In our environment any code which is submitted through pull request using devops, one or more reviewers are required. The question is however how these peer reviewers are talking the job seriously and are actually looking at the code and not blindy pressing the approve button. Trust and goverance are key to these peer reviews, but with the latest development AI can play a critical role in automating this process. Remember that coding is quite logical and strict. Even if you have multiple solutions for 1 problem, any solution will still be logical. With this in mind am AI is able to review any code and detect any defects and vulnerabilities.

Martin Fowler’s testing pyramid is a language-independent framework for assessing software correctness. The majority of automated tests should test decomposable units of functionality (“unit tests” without network access), mocking out dependencies where necessary. This is the base of the pyramid. The next layer up the pyramid comprises “integration” tests which validate responses from dependencies (databases, external services exposed over a network, libraries, etc.) are well formed and parsable. These tests are fewer in number. The fewest number of tests live at the top of the pyramid — these are end-to-end tests which validate business facing workflows such as API tests or UI tests. These are computationally expensive to run.

For ensuring that the code is secure, It is vital to use code analyzing tools like Linters. They check for possible bugs, unused variables and buffer overflows. Having unit tests in place for testing every possible inputs makes the code robust. Code coverage is a measurement of how much of the code is tested in unit tests.

Authentication and Authorization: Implement strong authentication mechanisms Encryption: Use encryption algorithms to protect sensitive data, both in transit and at rest. This is crucial for securing communication and stored information. Validations: Validate and sanitize all inputs to prevent injection attacks. This includes checking user inputs for malicious data. Monitoring and Logging: Implement robust monitoring and logging mechanisms to detect and respond to security incidents. This helps in identifying unusual activities and potential breaches. Code Reviews: Regularly review code to identify and fix potential security vulnerabilities. This involves having peers analyze the code for issues.

Regarding code safety, two additional measures can be implemented to mitigate risks: 1- Among other advantages, code revision is beneficial for error detection and risk mitigation to ensure the safety of application. 2- Vulnerability scanning of third libraries used in the code base which could be done using external tools and automated in CI pipelines.

Keeping software secure, regardless of the programming language, is crucial for safeguarding against threats. Follow the basic: Ensure input validation, robust authentication, and authorization controls. Encrypt sensitive data in transit and at rest, and follow secure coding practices. Stay updated with security patches and conduct regular security testing. Implement strong session management, protect against CSRF attacks, and use security headers. Secure file handling and API security are vital. Engage in code reviews and educate users about security. Above all, remember the importance of Business Analysis in ensuring security measures align with business needs, reducing vulnerabilities, and enhancing software safety.