Security by Design:
Security by Design is a holistic approach that integrates security principles into every stage of the software development process.
It ensures that security isn’t a feature added later.
Certain key principles in Security By Design:
- Keep Security Simple: Prioritize simplicity in security measures.
- Apply Defense in Depth: Implement multiple layers of security controls, creating a comprehensive defense strategy.
- Separation of Duties: Implement separation of duties to distribute responsibilities, preventing single points of failure or unauthorized access.
- Change Management and Version Control: Implement robust change management and version control processes to track and authorize modifications, minimizing the risk of unauthorized alterations.
- Fault Avoidance: Design with a focus on preventing faults from occurring in the first place, minimizing potential security risks.
- Fault Detection: Incorporate mechanisms to identify and diagnose faults promptly, allowing for proactive response.
- Fault Tolerance: Design systems to gracefully handle failures, ensuring uninterrupted operation in the face of unforeseen events.
- Fault Removal: Implement procedures for the swift removal of faults, reducing the window of vulnerability.
- Fail Securely: Design systems to fail in a secure state, minimizing the impact of any potential breach or failure.
- High Cohesion: Design components to work together cohesively, reducing the attack surface and enhancing overall system integrity.
- Exception Handling: Develop robust exception-handling mechanisms to gracefully manage unexpected situations without compromising security.
- Secure the Weakest Link: Identify and strengthen the most vulnerable components or processes to enhance overall system resilience.
- Secure Memory Management: Employ secure memory management practices to prevent buffer overflows and other memory-related vulnerabilities.
- Protect Memory or Storage Secrets: Safeguard sensitive information stored in memory or storage through encryption, access controls and other mechanisms
- Security Through Obscurity: Avoid relying solely on secrecy for security.
Threat modeling is a systematic approach to identifying and addressing potential security threats during the design phase of a system or application.
It’s a proactive process that helps anticipate possible vulnerabilities and craft defenses accordingly.
Threat Modelling Process:
- Asset Identification: Identifying the critical assets in your system. This could include sensitive data, user accounts, or proprietary algorithms.
- Threat Identification: Enumerating potential threats and vulnerabilities. This involves considering various attack vectors, such as unauthorized access, data breaches, or denial-of-service attacks.
- Risk Assessment: Evaluating the likelihood and impact of each threat. This step prioritizes addressing the most critical risks first.
- Countermeasure Development: Developing and implementing security controls to mitigate identified risks. This could involve encryption, access controls, or secure coding practices.
- Review and Iterate: Regularly reviewing and updating the threat model to adapt to evolving threats and changes in the application.
Useful Resources for Effective Threat Modeling:
- OWASP Threat Modeling Cheat Sheet: This guide not only offers practical guidance but also includes examples to aid developers in implementing effective threat modeling practices. OWASP Threat Modeling Cheat Sheet
- NIST SP 800-154: This document provides a structured approach to identifying and mitigating security risks, aligning with industry best practices. NIST SP 800-154
- Microsoft Threat Modeling Tool: This tool equips developers with the means to identify potential threats and vulnerabilities in their applications, integrating security seamlessly into the development process. Microsoft Threat Modeling Tool
You can take Secure development courses online at the below location!
You can take Secure development courses instructor led below!
Some supplementary material for you to prepare for certification!
Practice exams CASE.NET Code Review