DAST: Security Seen from the Outside – Testing Your App While It Runs
When an application is ready to be tested, many vulnerabilities only show up in a real runtime environment.
That is where DAST – Dynamic Application Security Testing comes in, making sure your software behaves safely when facing external interactions.
What is DAST?
DAST (Dynamic Application Security Testing) is a method that assesses an application’s security while it is running, simulating external attacks.
Unlike SAST, which looks at the code before execution, DAST acts like an ethical hacker, trying to find flaws in the live system.
How does DAST work?
- The app is placed in a test or pre-production environment
- The DAST tool interacts with the system as an external user (or attacker)
- Simulated tests and attacks are applied to identify vulnerabilities
- A report is generated with the flaws found and recommended fixes
✅ Benefits of DAST
- Detects vulnerabilities that only appear at runtime
- Simulates real attacks, increasing test accuracy
- Does not require access to the source code
- Ensures security before launch
- Helps meet standards and regulations
⚠️ Examples of vulnerabilities DAST can find
- Cross-Site Scripting (XSS)
- SQL Injection
- Authentication and authorization problems
- Sensitive data exposure through APIs
- Insecure server configurations
Recommended tools and practices
Tools such as OWASP ZAP, Burp Suite and Netsparker are widely used, but for DAST to be effective it is essential to:
- Have a test environment similar to production
- Integrate the tests into the development pipeline
- Fix vulnerabilities as soon as they are detected
How Pluritech uses DAST in its projects
At Pluritech, we apply DAST before every critical delivery and, when needed, continuously on sensitive applications.
This ensures that real vulnerabilities are found and removed before they cause damage.
Conclusion
DAST is a “trial by fire” for your application. It ensures that, even in the face of real attacks, the system is prepared to withstand them.
📞 Want to know how to ensure real security for your app before launch?
👉 Talk to Pluritech and learn about our security process with SAST, DAST and IAST.