Web Application Security: Threats and 6 Defensive Methods

Web Application Security: Threats and 6 Defensive Methods

Written by Kenneth Sawyer, In Cybersecurity, Updated On
April 21st, 2024

In an interconnected digital landscape, web applications are crucial to daily activities, facilitating seamless interactions and transactions. From online shopping to social networking, these applications have revolutionized how we engage with technology. However, this surge in digital connectivity has also brought to the forefront a critical issue: web application security vulnerabilities. Hackers frequently target web apps because they provide simple access to a larger audience, which allows malicious code to increase more quickly. However, with great convenience comes great responsibility, and web application security has become the primary concern.

Web application security testing tools assist in finding and resolving vulnerabilities before attackers exploit them, making them a fundamental element of any comprehensive security strategy. By strengthening web applications against threats and following security best practices, businesses can retain their integrity, secure customer data, and maintain a robust online presence. This creates trust and confidence among users.

According to Statista, data breaches exposed over six million records globally in the first quarter of 2023. The most exposed data records were found in the fourth quarter of 2020, with about 125 million data sets since then. That’s why it’s essential to regularly test web applications and use vulnerability scanning tools to identify vulnerabilities before they become significant issues.

Typical Web Application Security Threats

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Organizations must protect against web application vulnerabilities to preserve data security and privacy.

Cross-Site Scripting (XSS):

XSS attacks inject malicious scripts into websites or web applications. The harmful code is executed in the browser when the user interacts with a hacked website or app. XSS attacks are frequently carried out by injecting code into input fields that the target page executes when users view the page.

SQL Injection:

SQL vulnerabilities enable attackers to input malicious commands into databases to exfiltrate, change, or delete data. SQL injection attacks target servers that store sensitive data utilized by web applications. They become vulnerable when exposed to information like user credentials and personal data. The most frequent vulnerability that allows for SQL injection attacks is inappropriate user inputs.

Cross-Site Request Forgery (CSRF):

This forces a target to perform unwanted actions on a website. The attacker misleads the victim into submitting a request that causes harmful actions on the web application by taking advantage of the trust between the user, browser, and application. CSRF attacks can be carried out for various reasons, ranging from mischievous pranks to facilitating unauthorized financial transactions.

Security Misconfiguration:

It occurs when security protections in a web application or the surrounding infrastructure are not correctly configured. Examples of security configuration errors include unpatched known vulnerabilities, cloud storage exposed to the Internet with no authentication, insecure default configurations left as-is, misconfigured HTTP headers, or overly detailed error messages that reveal sensitive information to attackers.

Session Hijacking:

It occurs when an attacker gains unauthorized access to a user’s session, typically through stolen session tokens or session IDs. It enables attackers to act like users, potentially leading to unauthorized actions and data breaches.

DDoS Attacks:

These attempt to overload the web application’s servers or network infrastructure with traffic, making the service unavailable to authorized users. Such attacks disrupt operations, cause downtime, and deteriorate web app availability.

Defensive Methods for Web Application Security

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Here are methods to defend against web application security threats:

Input Validation and Sanitization

These are the first steps in ensuring robust web application security. Validating and sanitizing user inputs is critical because it protects against potential vulnerabilities and harmful attacks like injection exploits. Validation ensures user-entered data adheres to specified formats, preventing common risks such as SQL injection and cross-site scripting (XSS). Sanitization removes hazardous elements from user inputs, boosting protection against code injection attacks. Web applications can strengthen their protection against various security risks by requiring severe input validation and sanitization. It ensures the integrity and safety of user data.

Authentication and Authorization

Effective authentication mechanisms are critical safeguards in web application security, ensuring only authorized users can access sensitive data and functionalities. Strong authentication offers an extra defense against unauthorized access by requiring multiple verification stages, such as passwords, fingerprints, or one-time codes. It minimizes the risk of identity theft, unauthorized account access, and data breaches dramatically. Strong authentication protects user accounts and improves system security, strengthening defense against emerging cyber threats in the digital world.

Secure Coding Practices

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By adopting secure coding principles, developers can identify and mitigate potential weaknesses, reducing the risk of exploitation. Emphasizing robust input validation, secure authentication, and adherence to security frameworks, secure coding ensures that applications are resilient against common threats like SQL injection and cross-site scripting. This approach safeguards sensitive data and builds a safe online environment, fostering user trust and shielding against evolving cyber threats.

Regular Security Audits and Penetration Testing

Periodic evaluations identify and address vulnerabilities within web applications, providing resilience against evolving threats. Security audits analyze the security posture, identifying potential weaknesses, while penetration testing simulates real-world attacks to pinpoint specific exploits. This dynamic duo fortifies web applications against potential breaches and fosters a proactive security culture. By highlighting the need for routine audits and testing, organizations can stay one step ahead of the growing cybersecurity landscape, protecting digital assets and maintaining user trust.

Implementing HTTPS and Secure Communication

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HTTPS encrypts data transmitted between users and the web server, minimizing unauthorized access and mitigating the risk of data interception. Web applications that receive an SSL/TLS certificate increase trust, safeguard user privacy, and protect against cyber attacks. This security feature is crucial for safeguarding sensitive information such as login details and personal data and providing a secure online environment for users.

Test Web Application with HCL AppScan for Vulnerability Management

With HCL AppScan, developers, DevOps teams, and security professionals gain access to a comprehensive suite of technologies to identify application security vulnerabilities throughout the software development lifecycle. Protect the business and customers by utilizing web application security testing tools, centralized visibility and oversight, and flexible deployment options such as on-premises, on-cloud, and cloud-native.

As a web application security testing tool, HCL AppScan can strengthen applications, ensure robust security measures, and provide peace of mind for your organization and those who rely on your software solutions.

Request a demo today and learn how to monitor application security continuously, maintain compliance with regulatory requirements, and mitigate open-source risk.

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