More often than not, today's modern business needs a web application to make the user experience more accessible to reach a bigger audience. However, this means that its accessibility makes it a prime target for any cyberattack and data breach if its security measures are weak.
Ensuring your web application is secure helps avoid a data breach and saves you up to $4.88 million, based on IBM’s 2024 report. Fortunately, there are several ways you can strategically develop your app to protect your users, data, and of course your business.
In this blog, you’ll discover some of the most crucial security practices developers can take in 2025 to ensure your application is well-guarded.
The Importance of Web App Security
Cybersecurity serves a valuable purpose to any business, it ultimately safeguards sensitive data and protects against cyberattacks. This is especially crucial for web applications since anyone anywhere can access your product or platform, use it, and either share their information with you or use it unfavorably.
Creating secure web applications is no easy feat. In 2024, data breaches in the U.S. healthcare sector affected almost 146 million people, nearly half the country’s population. This makes it even more important for businesses to implement security strategies to mitigate data privacy concerns.
How to Secure Web Apps in 6 Ways
Aside from taking the necessary security compliance measures, you’ll want to build these best practices when developing your app.
1. Implement Web Timing Attack Mitigations
Web timing attacks can use response times against your app by measuring how long it takes to process varying amounts of information. Because the timing can differ, the attacker can make repeated attempts and determine patterns that can shed light on vital information.
To mitigate timing attacks with new technology, you can implement the following:
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Standardize response times: Sticking to a standard processing period will make it harder for attackers to spot patterns that can give away sensitive information.
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Randomize delayed responses: Just because you’re standardizing the processing period doesn’t mean you can’t sprinkle in an element of surprise to throw off attackers. Add in randomly distributed delays. This can conceal patterns.
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Opt for constant-time algorithms: Cryptographic and comparison operations that work in constant-time also prevent attackers from getting any insights from process times.
Pro-tip
Compiler optimizations may introduce unexpected changes to make the code faster. Always review and verify the code in the same environment you’ll be using it to ensure it remains intact.
2. Prioritize Password Length Over Complexity
Keeping updated on requirements and guidelines from The National Institute of Standards and Technology (NIST) is key to maintaining secure web applications. In its most recent update, it’s no longer enough to create complex passwords. Length makes a difference.
This means developers must encourage users in UX copy to create longer passwords to make it harder for sudden attacks to breach data. Some useful ways to apply this include:
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Encouraging users to create “passphrases”: Suggest that users create “passphrases” or a string of multiple words to make a password so that it’s easier to remember and harder to crack. When creating their password, you can put this under instructions to foster better adoption rates.
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Ditch mandatory periodic password changes: Password changes shouldn’t be done frequently as it may be harder for users to keep changing and effectively lead to weaker password choices in the interest of remembering them.
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Promote password managers: By promoting password managers, you’ll be able to help users handle longer passphrases without the burden of memorization, especially when the average person will have more than a handful of apps to log into.
Pro-tip
When you’re creating password policies, the simple act of allowing spaces and a wider range of keyboard characters opens the door to more user-friendly passphrases that, in turn, stand as more complex and secure in the long-run.
3. Secure Cloud Service Configurations
Cloud services are often the best option when you’re looking for scalability and flexibility, but they're also at risk for getting misconfigured. This ultimately increases the chance of exposing sensitive data and operations to attackers or anyone with unauthorized access.
Some great ways to prevent misconfigurations throughout the development process include:
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Regular configuration audits: In addition to standard website security audits, frequent audits of cloud service settings can help avoid misconfigurations.
Various solutions like Wiz's Application Security Posture Management can help scan for these vulnerabilities and identify misconfigurations early. -
Apply the principle of Least Privilege for controls: Precautionary measures like assigning users and services the most essential permissions to do their intended tasks will prevent any privilege creep from occurring.
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Use security groups and network segmentation: Configure security groups appropriately while segmenting networks will isolate components and limit access to sensitive information from prying eyes. This is a great way to keep attackers from pulling more critical information that can be tied to a compromised resource.
Pro-tip
Cloud providers may have differing shared responsibilities. It's crucial to check if the provider offers security that you need.
4. Manage Security for Browser Extensions
Browser extensions are useful, especially when looking at productivity, but when you or your team is using one that doesn't have the right security protocols, it can expose you and the business to vulnerabilities. A poorly designed extension can compromise the user’s data and your app’s security, after all.
You can enforce stricter policies while educating your users about security in these ways:
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Curate approved extensions: Keep a list of extensions and classify them accordingly. Include vetted extensions and those that don’t meet security standards. Share and emphasize the specific list of unapproved extensions in your security policy. This will help prevent users from installing them.
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Monitor and update extensions: Regularly reviewing installed extensions for updates can help you weed out those that are outdated or no longer necessary. Ideally, this process is automated to keep workflows consistent.
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Educate users: Letting others know of the risks that come with installing the wrong extensions. Make it a point to add warnings or offer resources to help others identify what is safe to install.
Pro-tip
Use a browser management tool to enforce your extension policies across the business, ensure compliance, and minimize the risk of security breaches.
5. Implement Machine Learning for Threat Detection
Machine learning (ML) has diverse capabilities for building systems to learn from data, which can be used in security for identifying and mitigating web vulnerabilities. From all its analyzed patterns and anomalies, ML can determine what might be a more sophisticated cyber threat with new technology.
Some ways you can set up ML for threat detection are:
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Develop ML models for anomaly detection: Train models to spot anomalies by establishing behaviors normally flagged as security threats. Factor everything from the major actions down to the most minor habits for a wider scope of learning. This opens a path for a more proactive approach in identifying sophisticated attacks.
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Continuously update training data: While this may be a no-brainer, it’s important to build this into processes as regularly introducing new data into ML models will help them adapt to emerging threats, detect faster, and reduce false positives.
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Integrate ML with existing security tools: Integrating your ML models into existing tools enhances your security infrastructure. This creates an opportunity for your security to utilize advanced learning, protecting your web app against new threats.
Pro-tip
If you want more precise threat detection and mitigation strategies, you'll want to train your ML model with more focused data on only one or two weaknesses.
6. Utilize Interactive Application Security Testing (IAST)
IAST or “grey-box testing” tools conduct real-time scanning for weaknesses in applications and APIs. It works only when the app is being used by a live user or an automated test runner, offering a more comprehensive analysis and report of your app’s performance.
Some effective ways you can use IAST are:
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IAST integration into CI/CD pipelines: Embedding IAST tools in your Continuous Integration/Continuous Deployment workflows will keep monitoring ongoing. In effect, detection and prevention can be done real time.
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Combine results with other tools: Merging your IAST results with findings from other security methods like Static Application Security Testing (SAST) and web application penetration testing allows you to get a robust overview of your app's overall security health.
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Classify priority levels of detected weaknesses: Make it a habit to assess the severity and impact of any detected vulnerability. This helps sort priority on what to resolve and reduce the risks it may present.
Pro-tip
Regular updates of IAST tools are inevitable. Make it a point to recalibrate it after every update for peak accuracy and performance on vulnerability detection.
Conclusion
Investing in web application security goes beyond gathering user data privately, protecting your user’s sensitive information and your business’s assets against threats is a real issue. With cyberattacks advancing more and more thanks to the likes of AI and new technology, it’s become more important than ever to strengthen security.
When you can implement the right strategies for threats like web timing attacks, cloud configurations, and vulnerability detection, you can build an app secure enough to gain your user’s trust and keep the business compliant across vital regulations.
Cybersecurity is one of the most important aspects of building a web app. It requires ongoing monitoring, adapting to new threats, and constantly improving existing processes.
