{"id":2046,"date":"2024-09-27T09:00:45","date_gmt":"2024-09-27T08:00:45","guid":{"rendered":"https:\/\/aegislens.com\/home\/22-introduction-to-secure-coding-practices\/"},"modified":"2024-09-27T09:00:45","modified_gmt":"2024-09-27T08:00:45","slug":"22-introduction-to-secure-coding-practices","status":"publish","type":"post","link":"https:\/\/aegislens.com\/home\/22-introduction-to-secure-coding-practices\/","title":{"rendered":"22. Introduction to Secure Coding Practices"},"content":{"rendered":"

As we venture deeper into the digital age, the value of secure coding practices has become increasingly evident. Secure coding is the practice of writing software in a way that guards against the accidental introduction of security vulnerabilities. Left unchecked, these vulnerabilities may be exploited by malicious entities, leading to damaging breaches of data and functionality. This lesson will elucidate the importance of secure coding practices, guide you through the fundamentals, and introduce some best practices you should consider. <\/p>\n

Understanding Secure Coding <\/h2>\n

Secure coding is a subset of software development that places a high priority on data privacy and protection. It considers not just functionality, but also what could go wrong, and prepares for it. Traditional testing aims to verify expected outcomes, whereas secure coding safeguards against unexpected or malicious outcomes through careful and preventive programming. <\/p>\n

Common forms of these security threats include injections, cross-site scripting, insecure deserialisation, and using components with known vulnerabilities. The key here is prevention over cure, and it’s much more cost-efficient to avoid these problems than to solve them after occurrence. <\/p>\n

Principles of Secure Coding<\/h2>\n

To successfully implement secure coding practices, there are some foundational principles to grasp:<\/p>\n

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  1. Minimise Attack Surface Area:<\/b> Every function that an application performs creates potential for misuse. Secure coding limits these functions to only what is necessary, thus mitigating risk.<\/li>\n
  2. Least Privilege Principle:<\/b> Any component of a software system should only be privileged with the minimum powers it needs to perform its function. This limits the damage that can be done in the event it’s compromised. <\/li>\n
  3. Separation of Privilege:<\/b> Multiple conditions should be required to achieve sensitive outcomes, offering layered protection. <\/li>\n
  4. Defense in Depth:<\/b> This military-originated principle implies multiple layers of security, so that if one fails, others are still in place to defend the system.<\/li>\n
  5. High Cohesion & Loose Coupling:<\/b> Code units tightly focussed on their tasks (high cohesion) and with minimal dependencies on other code units (loose coupling) makes code more secure.<\/li>\n<\/ol>\n

    While the above are not exhaustive, they provide practical guidelines when crafting your software systems. <\/p>\n

    Secure Coding Best Practices<\/h2>\n

    In adopting secure coding, there are also some key practices to uphold, including:<\/p>\n