Job Description
. What is application security design, and why is it important?
Answer:
Application security design focuses on building security into the architecture before code is written. It helps prevent systemic vulnerabilities that cannot be fixed by tools later, such as broken trust boundaries, weak authentication flows, or insecure data handling. Fixing design flaws early is significantly cheaper and reduces long-term risk compared to relying only on SAST/DAST after development.
2.How do you approach a secure design review?
Answer:
I follow a structured approach:
* Understand business goals and data sensitivity
* Review architecture diagrams and data flows
* Identify trust boundaries and entry points
* Perform threat modeling (STRIDE/OWASP)
* Validate authentication, authorization, and data protection
* Recommend design controls and document risks
The goal is risk reduction, not perfection.
3. What is threat modeling, and how do you apply it?
Answer:
Threat modeling is a structured method to identify how an attacker could abuse a system. I typically use STRIDE for technical threats and PASTA when business impact is important.
I focus on:
* Entry points (UI, APIs, integrations)
* Trust boundaries
* High-impact abuse cases
4. How do you identify trust boundaries in an application?...