Web application security (often referred to as Web AppSec) is the concept of designing websites to function normally even when they are attacked. The notion is integrating a set of security measures into a Web application to protect its assets from hostile agents. Best web development companies in Chennai are developing web applications integrated with security measures.

Application security refers to security precautions used at the application level to prevent the theft or hijacking of data or code within the app. It includes security concerns made during application development and design, as well as methods and approaches for protecting apps after they’ve been deployed.

Hardware & Software Security

Hardware, software, and methods that identify and mitigate security vulnerabilities may be included in application security. Hardware application security refers to a router that stops anyone from viewing a computer’s IP address over the Internet.

However, application-level security controls, such as an application firewall that rigorously limits what actions are allowed and banned, are often integrated into the software. An application security routine that includes protocols such as regular testing is an example of a procedure.

Web applications, like all software, are prone to flaws. Some of these flaws are actual vulnerabilities that can be exploited, posing a risk to businesses. Such flaws are guarded against via web application security. It entails employing secure development approaches and putting in place security controls throughout the software development life cycle (SDLC), ensuring that design flaws and implementation issues are addressed.

Why is web security testing important?

The goal of web security testing is to identify security flaws in Web applications and their setup. The application layer is the primary target (i.e., what is running on the HTTP protocol). Sending different forms of input to a Web application to induce problems and make the system respond in unexpected ways is a common approach to test its security. These “negative tests” look to see if the system is doing anything it wasn’t intended to accomplish.

It’s also vital to realize that Web security testing entails more than just verifying the application’s security features (such as authentication and authorization). It’s also crucial to ensure that other features are deployed safely (e.g., business logic and the use of proper input validation and output encoding). The purpose is to make sure that the Web application’s functions are safe.

What are the different types of security tests?

Dynamic Application Security Test (DAST)

This automated application security test is best for internally facing, low-risk applications that must comply with regulatory security assessments. For medium-risk applications and critical applications undergoing minor changes, combining DAST with some manual web security testing for common vulnerabilities is the best solution.

Static Application Security Test (SAST)

This application security approach offers automated and manual testing techniques. It is best for identifying bugs without the need to execute applications in a production environment. It also enables developers to scan source code and systematically find and eliminate software security vulnerabilities.

Penetration Test

This manual application security test is best for critical applications, especially those undergoing major changes. The assessment involves business logic and adversary-based testing to discover advanced attack scenarios.

Runtime Application Self Protection (RASP)

This evolving application security approach encompasses a number of technological techniques to instrument an application so that attacks can be monitored as they execute and, ideally, blocked in real-time.

How does application security testing reduce your organization’s risk?

  • Majority of Web Application Attacks
  • SQL Injection
  • XSS (Cross Site Scripting)
  • Remote Command Execution
  • Path Traversal
  • Attack Results
  • Access to restricted content
  • Compromised user accounts
  • Installation of malicious code
  • Lost sales revenue
  • Loss of trust with customers
  • Damaged brand reputation

And much more

In today’s climate, a Web application might be harmed by a variety of challenges. The graphic above depicts a few of the most common attacks perpetrated by attackers, each of which can cause significant damage to an individual application or an entire business. Knowing the many assaults that render an application vulnerable, as well as the possible results of an attack, allows your company to resolve vulnerabilities ahead of time and effectively test for them.

Types of application security

Authentication, authorization, encryption, logging, and application security testing are all examples of application security features. Developers can also use code to reduce security flaws in applications. Programmers include protocols in an application to ensure that only authorized users have access to it. Authentication processes verify that the user is who they claim to be.

When logging into an application, this can be performed by requiring the user to supply a user name and password. Multi-factor authentication entails a combination of elements, such as something you know (a password), something you have (a mobile device), and something you are (your identity) (a thumbprint or facial recognition).


A user may be authorized to access and use the program after being authenticated. By comparing the user’s identification to a list of authorized users, the system may verify that the user has permission to access the program. Authentication must occur prior to authorization in order for the application to match only validated user credentials to the approved user list.


Once a user has been authorized and is using the application, various security measures can prevent sensitive data from being viewed or exploited by a cybercriminal. Traffic containing sensitive data that flows between the end-user and the cloud in cloud-based apps can be encrypted to keep the data safe.


If a security breach occurs in your application, logging can assist in determining who gained access to the data and how they did so. Application log files keep track of which parts of the application have been accessed and by whom.

Application security testing

This is a vital step in ensuring that all of these security mechanisms are functioning effectively. Mitigating controls can be established throughout the early phases of the SDLC to prevent any issues by identifying the root cause of the vulnerability. During a Web application security test, knowledge of how these threats work can also be used to target known places of interest.