SAST vs DAST – Which one should you use? [2022]

In response to the ’tenth State of Software program Safety Report’ by Veracode, on the very first vulnerability scan, over 80% of apps had been discovered susceptible. From a pattern of just about 85,000 functions from 2,300 corporations throughout the globe, 70% of growth organizations cut back the variety of bugs of their code after this preliminary scan. Consequently, we are able to perceive that internet utility safety testing is a vital job within the growth of any utility.

There are two frequent varieties of safety assessments that can be utilized throughout this course of: Static and Dynamic. Static Utility Safety Testing (SAST) consists of analyzing the code to seek out vulnerabilities, whereas Dynamic Utility Safety Testing (DAST) refers to executing a program on a pc system with the intent to uncover flaws or weaknesses. Which kind must you use? Learn on to seek out out.

Static Utility Safety Testing

SAST is a sort of static code evaluation that analyzes the static program construction and determines if any vulnerability exists. This includes scanning an utility’s supply code to seek out points earlier than it will get compiled or executed by a consumer. Static code evaluation is static as a result of it doesn’t require this system to be executed.

It helps builders perceive how their utility malfunctions and determine coding errors early on within the growth course of.

Instruments used for SAST

  1. HP Fortify static evaluation instrument.
    • The HP Fortify static evaluation instrument is a superb solution to discover frequent vulnerabilities and safety defects in your code.
    • It supplies a scientific approach to enhance the standard of your code, so you’ll be able to ensure that it’s secure and safe.
  2. IBM AppScan static code analyzer.
    • AppScan is a static code analyzer that may assist determine safety vulnerabilities in your functions.
    • It scans supply code and binaries to seek out potential safety points, comparable to buffer overflows, SQL injection assaults, and cross-site scripting (XSS) assaults.
    • Functions hosted on IBM Cloud may also be scanned utilizing this instrument.
  3. Veracode static & dynamic code analyzer.
    • Veracode supplies a mixed static & dynamic code analyzer. It detects identified safety vulnerabilities.
    • False positives might be just about eradicated, permitting for faster decision of points discovered all through the event course of.
    • Veracode additionally detects vulnerabilities that may be missed by each guide and automatic vulnerability evaluation options.


  • SAST can discover vulnerabilities within the code earlier than they’re exploited. It additionally helps builders perceive how their utility works and determine coding errors early on within the growth course of
  • It doesn’t require working the applying.


  • It requires entry to the supply code which can not at all times be attainable if you happen to’re working with a third-party vendor.
  • Static evaluation can not detect points that happen at runtime comparable to reminiscence corruption, dynamic enter/output parameters or buffer overflows.
  • SAST might be time-consuming and complicated to arrange and use.

Dynamic Utility Safety Testing

In dynamic utility safety testing, instruments are used to observe the visitors between units on a community and its server whereas it performs numerous features comparable to inputting information into kinds inside an app to see how this exercise might be manipulated to ensure that hackers to realize entry.

In DAST, we monitor what occurs when there’s “actual life” interplay with the positioning and never simply the execution of automated scripts in opposition to it (which can miss sure vulnerabilities).

Instruments used for DAST

  1. Astra’s Pentest.
    • To make sure that no vulnerability is neglected, each computerized and guide assessments might be carried out.
    • Get probably the most up-to-date strategies for resolving bugs, tailor-made to your issues, in addition to video Proof of Ideas (PoCs) that present you the right way to produce them.
    • Astra intelligently calculates a danger rating for every vulnerability and does the danger grading.
  2. Acunetix internet vulnerability scanner (WVS).
    • It’s a specialised instrument for locating safety flaws in your web site. It scans and experiences all vulnerabilities it finds.
    • WVS doesn’t require any set up in your laptop, so you need to use it straight away throughout the browser.
    • Set up of updates is just not required as it’s a cloud primarily based instrument.
  3. Burp Suite Professional.
    • The Proxy instrument permits you to intercept and modify visitors between your browser and the net server.
    • The Spider instrument of the Burp Suite is a program that crawls by means of web sites and gathers details about their content material and construction.


– DAST can discover vulnerabilities that static testing could miss

– It assessments how the app behaves beneath real-world situations


– It’s costlier in comparison with SAST instruments.

– DAST’s capabilities are restricted to testing internet functions.


Which one is best for you? It is dependent upon your necessities. If that you must discover vulnerabilities in an utility earlier than it’s deployed, Static Utility Safety Testing is the best way to go. Nevertheless, if you happen to’re solely curious about internet utility safety, Dynamic Utility Safety Testing is the higher choice. Whichever instrument you select, be sure to are utilizing a good vendor and that your functions are being examined commonly for safety vulnerabilities.


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