TechnologyA comprehensive guide on how to boost your mobile app security

A comprehensive guide on how to boost your mobile app security

Today we can’t imagine our life without mobile applications that have become such an essential part of our everyday existence. We use them for everything from day-to-day activities like banking, and shopping to those like entertainment and productivity. On the other hand, with an increasing number of cyber security challenges, it is essential to guarantee that your mobile app is safe. A simple vulnerability can lead to a loss of user data, which may lead to financial loss, reputational damage, and even legal liability. This guide aims to explore different approaches that can be employed to enhance mobile app security.

  1. Build up a Secure Authentication: Authentication ensures that access to your mobile app is not unauthorized. Implement MFA (Multiple Factor Authentication) as an additional verification factor after the user password. The types of technologies used could range from biometrics (fingerprint or face recognition), and one-time passwords (OTPs), to security tokens. Another important point is to verify that your app follows best practices for password management. Establish strong password policies, like a minimum password length and a combination of characters, numbers, and symbols. Do not save a password in the plain text form and use hashing algorithms which are secure to protect user credentials.
  2. Encrypt Data at Rest and in Motion: Data encryption has an essential role in securing data that either is stored (at rest) or is being transmitted (in motion). Implement widely trusted encryption algorithms, such as AES-256, to build up a secure data store on the device or in the cloud. More importantly, implement a secure communication protocol such as HTTPS and TLS that encrypts data that is sent between the app and the server.
  3. Keep your apps updated: Keep Your App and Its Dependency Up-to-Date It is no secret that unpatched software or third-party dependencies check-ins are often the cause of the attacks. Update your app and dependencies regularly to have the latest build that contains the latest patches and bug fixes. Get well-informed about the security advisories and vulnerabilities related to the libraries and frameworks you are using and handle them as quickly as possible.
  4. Adopt Secure Coding Approach: Secure coding approach is the key to avoiding loopholes in the app’s codebase. Follow secure coding guidelines such as OWASP, Mobile App Security Verification Standard (MASVS), or the CERT Coding Standards that are used in the industry. These guidelines address a comprehensive list of security topics, including input validation, output encoding, secure storage, and secure communication. Furthermore, organize regular code reviews and static analysis to uncover vulnerabilities in your codebase before they exist in your application.
  5. Defending your apps against mobile vulnerabilities: Apps on mobile devices are no exception as they can be targeted by many kinds of threats including MITM attacks, reverse engineering, and malicious code injection. Implement countermeasures to protect your app against these threats:
  • MITM attacks: Apply certificates pinning to make sure that your application talks exclusively to the supposed server and abandon MITM attacks that try to intercept and alter the communication.
  • Reverse engineering: Encrypt your app’s code and develop anti-tamper techniques that prevent reverse engineering and code alteration.
  • Malicious code injection: Use runtime application self-protection (RASP) mechanisms like input validation, output encoding, and sandboxing, to deny the entry and execution of harmful programs.
  1. Implement Secure Storage and Data Handling: Protect your app from leaking sensitive information like authentication credentials, API keys, and user info, through secure storage. Employ secure storage solutions like the Apple Keychain or Keystore on Android to keep your confidential data on the device. Don’t keep sensitive data in insecure locations, including shared preferences and SQLite databases.
  2. Privacy: In the course of the data handling process, respect regulations like the General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA). Apply data minimization techniques, obtain consent for data collection and processing from users, and provide the users with the choices to access, amend, and delete their data.
  3. Enforce Security Monitoring and Incident Response: It is vital to have proactive security monitoring and incident response plans in place to be able to detect and respond to security incidents in real time. Implement a logging mechanism that can analyze the app behavior, network traffic, and user activities. Develop incident response procedures that involve investigation and execution of timely action to tackle security incidents, for example, data breaches or unauthorized access.
  4. Perform Routinely Security Assessments: Security assessment that comprises penetration testing and vulnerability scanning should be done as a routine to ensure the security of your app. Seek assistance from experienced security experts or third-party security firms and have them conduct security assessments of the app and provide you with recommendations for improving the app’s security standing.
  5. Educate Your Users and Developers User education is a component that cannot be disregarded in mobile application security. Develop guidelines and instructions on how to use your app safely for your users, e.g. not using public Wi-Fi networks, keeping their devices updated, and being vigilant of phishing attempts. Adding to that, making sure that your developers are educated regularly in security matters and that they keep them updated with the latest security trends, vulnerabilities, and best practices should be a matter of great concern.


Last, but certainly not least, the security of your mobile app is one of the high priorities in the age of digitalization. Implementing the recommended strategies stated in this guide would be a step followed to strengthen the security of your app against various security threats and provide the users with a safe and secure experience. Managing appsec is an ongoing process where it is necessary for vigilance and proactive efforts so that it will help you to stay ahead of emerging threats. Deciding on security from the beginning and using a defined approach to app security, you can reduce risks and make it possible for your users to have an assured mode of handling their information. By following these strategies, you can significantly enhance the security of your mobile app, protect your users’ data, and maintain their trust in your app.