Web Application Security Insights

Walter Code
5 min readJul 13, 2023
Our latest internal workshop was all about Web App security!

In today’s digital landscape, web application security is of paramount importance. With the increasing sophistication of cyber threats, organizations must proactively implement robust security measures to protect their web applications, web services, and web servers.

In this blog post, we will delve into the world of web application security, explore its significance, and provide practical insights on mitigating common vulnerabilities. By adopting secure development practices and understanding potential risks, you can fortify your online assets and ensure a safer digital experience for your users.

The contents of this blog are an extension of one of our latest internal workshops, where our colleague Stefan Rajić led us through his insights into the world of Web Application Security.

Understanding Web Application Security:

Web application security encompasses the protective measures put in place to defend against potential attacks targeting web applications, web services, and web servers. Like any software, web applications may contain flaws, some of which pose real vulnerabilities that can expose organizations to risks and exploitation. The objective of web application security is to establish security controls that enable websites to function as intended, even in the face of attacks.

Importance of Web Application Security:

Web application security is critical for several reasons. Firstly, it helps protect the sensitive data of users and organizations. From personal information to financial data, web applications often handle valuable data that must be safeguarded from unauthorized access and malicious exploitation. Additionally, robust web application security ensures the integrity and availability of services, building trust and credibility among users.

By prioritizing security, organizations can avoid reputational damage and legal consequences resulting from data breaches and cyberattacks.

The OWASP: Understanding Common Risks:

Firstly, let’s meet the OWASP: “We are an open community dedicated to enabling organizations to conceive, develop, acquire, operate, and maintain applications that can be trusted. All of our projects, tools, documents, forums, and chapters are free and open to anyone interested in improving application security. The OWASP Foundation launched on December 1st, 2001, becoming incorporated as a United States non-profit charity on April 21, 2004.” They have been doing an incredible job of improving the security of software, and throughout the years their programming has included:

  • Community-led open-source software projects
  • Over 250+ local chapters worldwide
  • Tens of thousands of members
  • Industry-leading educational and training conferences

Now that we have introduced the OWASP project, let’s take a look at an interesting list that they have compiled. The Open Web Application Security Project (OWASP) has compiled a list known as the OWASP Top 10, highlighting the ten most critical security risks. While these risks provide valuable insights, it’s important to note that numerous other threats can impact web application security.

Let’s delve into some of the prevalent vulnerabilities commonly found in web application security:

1. Broken Access Control: Properly implementing access controls based on user roles and permissions, secure session management techniques, and thorough testing are crucial to prevent unauthorized access and data leakage.

2. Cryptographic Failures: Utilizing strong encryption algorithms, implementing secure key management practices, and validating and sanitizing cryptographic inputs ensure the confidentiality and integrity of sensitive data.

3. Injection: Employing parameterized queries or prepared statements, input validation, and sanitization techniques helps prevent injection attacks, such as SQL, NoSQL, or OS command injections.

4. Insecure Design: Secure design principles, threat modeling, risk assessments, and early implementation of security controls promote resilient and secure web applications from the ground up.

5. Security Misconfiguration: Regularly updating and patching software components, adhering to security best practices, and conducting security audits help eliminate misconfigurations that can lead to vulnerabilities.

6. Vulnerable and Outdated Components: Maintaining an inventory of used components, monitoring for security updates, and promptly patching vulnerabilities minimize the risk of exploitation through outdated or vulnerable components.

7. Identification and Authentication Failures: Enforcing strong password policies, implementing secure authentication protocols, and employing multi-factor authentication enhance user identity protection and mitigate common authentication vulnerabilities.

8. Software and Data Integrity Failures: Employing input validation and sanitization techniques, secure coding practices, and integrity checks detect and prevent code injection attacks and data tampering.

9. Security Logging and Monitoring Failures: Implementing comprehensive logging, automated log analysis, and alerting mechanisms enables early detection and response to security incidents, enhancing incident management and reducing potential impact.

10. Server-Side Request Forgery: Implementing proper input validation and sanitization, employing strict access controls, and educating developers about the risks of server-side request forgery are essential for preventing unauthorized requests and protecting sensitive data.

Stefan Rajić, our workshop presenter!


As the digital landscape evolves, safeguarding web applications against threats is a critical priority. By embracing secure development practices, understanding the OWASP Top 10 risks, and staying proactive in addressing vulnerabilities, organizations can fortify their web applications and protect their users’ data.

Prioritizing web application security not only safeguards sensitive information but also enhances trust, credibility, and brand reputation. Remember, web application security is an ongoing journey that demands continuous vigilance and a commitment to staying updated with emerging threats. By investing in robust security measures, you can create a safer online experience for your users and mitigate the risks associated with today’s ever-evolving cyber landscape.

Kudos to Stefan for leading us through this workshop, he’s done an amazing job sharing his knowledge about Web Application Security and showing us some of the best practices. It’s an honor to have you on the team Stefan!