Web Application Security

What is Web Application Security?

A method of securing websites and online services from a variety of security threats that take advantage of security flaws in the application code.
Websites application security and online services is a technique of defending against security threats that exploit vulnerabilities. Content management systems such as WordPress. Database tools and SaaS applications are the common targets for online application attacks.

  • The approach is building websites such that they may remain functional even if they are under cyberattack.
  • Because of the intrinsic complexity of their source code, there is a higher risk of neglected vulnerabilities and malicious code tampering. As a result, an application’s resources are protected against potential hazardous elements by including a set of security measures in the application.

How Does Web Application Security Work?

Different approaches to web application security address a set of challenges.
The most comprehensive online application firewalls (WAFs) guard against a wide range of attacks by monitoring and filtering traffic between the web application and any user.
When configured with policies that help identify what traffic is secure and what isn’t, a Firewall can block malicious activity and prevent it from happening again.

Importance of Web Application Security Tests

As a result of web application and configuration security testing, security issues in web applications and their setups are identified. Priority should be given to the application layer (i.e., what is running on the HTTP protocol).
A common way to test web application security is by providing diverse inputs that would cause the system to react unexpectedly. The goal is to ensure that the disclosed functionality of the Web application is secure.

Types of Web Security Tests

Online security testing is the process of testing, analyzing, and reporting on a web application’s security.
It is divided into 2 types.

Dynamic Testing

Automated security test is best suited for internally facing, low-risk apps that must meet regulatory security requirements.
Connecting DAST with some manual online security testing for common vulnerabilities is the best approach for medium-risk apps and important applications undergoing minor modifications.

Static security Test

The static test is including both automated and manual testing approaches. It is ideal for detecting issues without having to run programs in a production environment.
Similarly, it allows to analyze source code and methodically discover and fix software security flaws.

A list of common web application security flaws

OWASP’s top ten most common application security flaws are:


It is happening when a rogue actor delivers invalid data to the web app, causing it to behave differently than planned.

Fail Authentication

An authentication enables an attacker to take over a user’s account or the entire system.

Data Breach

Sensitive data exposure indicates that data that should have been protected is vulnerable to bad actors.

XML Entities

A threat occurs when an XML decoder that has been improperly configured examines input that contains a reference to an external factor.

Poor Control

When features of a web program are not properly secured, exposing them to the risk of data loss.


Incorrectly setting a web application allows hackers to easily access sensitive data.

Cross-site Scripting

An XSS attack involves a malicious client-side script being injected into a web application.

Awkward Deserialization

Any interaction with a web app, from URLs to encoded objects, can be utilized to gain access to a protected area.

Vulnerable Devices are used

If you’re looking to hack a web application, missing software and changelogs could be major clues for attackers. A known vulnerability can survive if you don’t update your software.

Lack of logging and monitoring.

A web app’s security can be compromised if logging and monitoring are inefficient. 
The majority of these flaws are uncontrollable by Firewalls because of their poor ability to detect malicious traffic masquerading as legitimate