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Definition of
Dynamic Application Security Testing (DAST)
With the increasing threat of cyber
attacks, application security testing has become a crucial part of software
development. Dynamic Application Security Testing (DAST) is one of the methods used to test the
security of web applications. It involves testing the running application for
vulnerabilities, and it is an essential part of any comprehensive security
testing strategy.
DAST is a type of security testing
that involves testing a running web application for vulnerabilities. It is also
known as black-box testing because it simulates an attacker attempting to
exploit vulnerabilities in the application. DAST examines the application from
the outside and checks for any security vulnerabilities that could be exploited
by an attacker.
How DAST Works
DAST works by sending inputs to the
web application, such as HTTP requests, and observing the responses. It checks
for security vulnerabilities in the application by looking for common attack
patterns, such as SQL injection, cross-site scripting (XSS), and others. DAST
tools can also simulate attacks on the application and report the results to
the development team.
Benefits of DAST
DAST
offers several benefits, including:
- Identifying vulnerabilities in the
running application that may not be detected during development or
testing.
- Providing a comprehensive view of the
application's security posture.
- Supporting compliance with regulatory
requirements.
- Integrating with development workflows
and CI/CD pipelines.
Limitations of
DAST
DAST has some limitations, including:
- Not detecting vulnerabilities in the
source code or configuration files.
- Generating false positives or false
negatives, depending on the complexity of the application.
- Being less effective against certain
types of vulnerabilities, such as access control issues.
- Being less efficient than Static
Application Security Testing (SAST) in detecting vulnerabilities in large
codebases.
DAST vs. Static
Application Security Testing (SAST)
DAST and SAST are complementary
methods for testing the security of web applications. While DAST examines the
application from the outside, SAST analyzes the source code for
vulnerabilities. SAST can detect vulnerabilities that DAST cannot, such as
configuration issues and hard-coded credentials. However, DAST can identify
vulnerabilities that are only present when the application is running.
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