![]() Interactive application security testing (IAST) And, like the boy who cried wolf, SAST's nature can cause its warnings to be ignored by users in real-world scenarios. These then require manual investigation, which costs time and money. Unfortunately, because SAST works on a theoretical, rather than a practical level, it is prone to reporting false positives. This is what's known as a "white box" security testing technique - because the test can see the web app's code in its entirety (unlike most real attackers). A good analogy would perhaps be having an expert view the blueprints for your bank vault to look for flaws. It works from the inside-out on static code. SAST is more or less the opposite of DAST. Static application security testing (SAST) All things being equal, DAST will generally report far fewer false positives than SAST, for instance (see below). Burp Suite evolved largely out of a DAST methodology.īecause DAST is a practical technique - simulating a real attack on a running web app - its results can generally be assumed to be correct. This is what's known as a "black box" security testing technique - because the code running behind the web app is not visible to the test. It's a lot like having a team of experts try and break into your bank vault for you. Among the best-known are: Dynamic application security testing (DAST)ĭAST works from the outside-in on a running app. There are various concepts in web application security testing. ![]() Types of web application security testing Build it strong and keep it strong - testing every attack method you can. The walls of the "vault" are now code, and many (but not all) of the actors involved are automated, but the theory is the same. You'll see below that this is not so different to web app security testing. You would keep doing this as time went on and new weaknesses were discovered - altering the vault accordingly. Then you might employ a team of specialists to try and break into it. To use the analogy of a bank vault, you would first ensure that it was designed correctly. The solution is to test your web apps to see where their weaknesses lie. And new security vulnerabilities are being discovered all the time - so it's hard to keep up. For starters, the developers who build web apps tend not to be security specialists. But in the real world, securing a web application is no easy task. This means web application security is crucial. Groups exist who want to steal data - whether it's for surveillance purposes, to commit fraud, or simply to sell on. And like any commodity, data has a storage risk. One thing all web applications have in common is that they handle data - a valuable commodity. ![]() A web application could form a small part of a website, or it could be a website in its own right. If you access it through a browser, then it's a web app. Web apps are just more flexible for many purposes.įrom simple contact forms and e-commerce checkouts, right the way up to social media platforms and online banking systems. Technically, any client-server program that's accessed using a web browser is a "web application" - which nowadays includes the vast majority of the internet. Years ago, when desktop applications were still the order of the day, web apps were much rarer than they are now. It covers both automated and manual techniques across a number of different methodologies. Web application security testing aims to determine whether or not a web app is vulnerable to attack. Web application security testing What is web application security testing?
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