Five overlooked security risks that can compromise your app

APIs are the backbone of modern apps, facilitating communication between different services. However, API misconfigurations are one of the most common yet underestimated security flaws. In 2023, API security incidents increased by 681%, highlighting how often they are targeted by attackers.

Common issues include unrestricted access, overly permissive API keys, and a lack of rate limiting. These vulnerabilities can allow attackers to exploit your APIs, leading to data breaches and unauthorised access. In a recent audit, we discovered an app exposing user data due to a poorly secured public API endpoint - something that could have been easily prevented with proper authentication controls.

How to fix it: Implement strong authentication protocols like OAuth 2.0, enforce rate limiting, and conduct regular API security testing. Also, avoid exposing unnecessary API endpoints and use API gateways to add an extra security layer.

Data stored insecurely - whether in a local database, cloud storage, or device storage - can be a serious security flaw. A staggering 60% of apps store sensitive data insecurely, making them prime targets for cybercriminals. This risk is particularly high when encryption is weak or nonexistent.

One example would be an app storing user passwords in plaintext within a local database. If an attacker gained access, they would have had an open invitation to steal user credentials.

How to fix it: Always encrypt sensitive data using industry-standard encryption algorithms like AES-256. Never store passwords in plaintext - use secure hashing methods like bcrypt or Argon2. Additionally, avoid storing sensitive data on the device unless absolutely necessary.

One of the most common ways attackers gain unauthorised access to apps is through weak authentication mechanisms. A report found that 81% of data breaches are due to weak or stolen credentials. Yet, many apps still rely on outdated authentication methods, such as simple password-based logins without multi-factor authentication (MFA).

We've seen cases where apps allowed weak password policies or failed to revoke user access after an account was deactivated, leaving backdoors wide open for exploitation.

How to fix it: Implement MFA as a standard, enforce strong password policies, and regularly audit user access controls. Role-based access control (RBAC) can also ensure users only have access to what they need, reducing potential attack vectors.

Security starts at the code level, yet many development teams unknowingly introduce vulnerabilities due to poor coding practices. Common issues include hardcoded credentials, unvalidated input (leading to injection attacks), and failure to follow secure coding frameworks.

For example, a mobile banking app could have hardcoded API keys within the app’s source code. If an attacker decompiled the app, they could extract these keys and exploit the backend system.

How to fix it: Follow secure coding guidelines such as OWASP’s Secure Coding Practices. Regularly conduct static and dynamic code analysis, and never store credentials within the code. Instead, use environment variables or secure credential management tools.

Security is not a one-time fix - it’s an ongoing process. However, many businesses neglect regular security testing, leaving their apps vulnerable to emerging threats. Studies show that 73% of apps have at least one known vulnerability due to outdated components.

We’ve encountered apps still running on outdated frameworks with known security flaws simply because security updates were not prioritised.

How to fix it: Schedule regular security audits and penetration tests to identify vulnerabilities before attackers do. Keep dependencies and libraries up to date, and adopt a proactive approach to security patching.

If these risks sound concerning, you’re not alone. Many businesses don’t realise they have security gaps until it’s too late. That’s where our app audit service comes in. Our team of experts conducts in-depth security reviews, identifying vulnerabilities and providing actionable insights to strengthen your app’s defences. Whether you need a deep dive into your app’s security or just a check on specific concerns, we tailor our audits to your needs.

Security isn’t just about ticking a compliance box, it’s about protecting your users, your reputation, and your business. If you’re unsure whether your app is at risk, get in touch with us to schedule an app audit today.