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What Is API Security for Mobile Applications?

Protect your mobile applications

API (application programming interface) security is a critical aspect of the development and deployment of mobile applications (apps). APIs are the key communication channels between the app and the back-end systems, and they handle sensitive data and transactions.

If APIs are not properly secured, they can be vulnerable to a wide range of security threats, including hacking, data breaches, and unauthorized access.

Importance of API security for mobile apps

Diagram illustrating how APIs support mobile applications

 

  • APIs are the main communication channels between the mobile app and the back-end systems.
  • APIs handle sensitive data, including personal information, financial information, and confidential business data.
  • A security breach through an API can result in significant damage to both the organization and its customers.

Best practices for API security for mobile apps

  • Implement secure authentication and authorization methods, like OAuth or OpenID Connect.
  • Encrypt sensitive data in transit and at rest.
  • Validate and sanitize user input to prevent injection attacks.
  • Use secure coding practices and keep software up to date to address known vulnerabilities.
  • Monitor and log API activity to detect and respond to security incidents.

API security is an important part of the development of mobile apps. APIs are the key communication channels between the app and the back-end systems, and they handle sensitive data and transactions

To protect against security threats, it is important to implement secure authentication methods, encrypt sensitive data, validate user input, use secure coding practices, and monitor API activity.

Threats to API security for mobile apps

  • Injection attacks: This type of attack involves injecting malicious code into the API request, which can cause the API to execute unauthorized actions or access sensitive data.
  • Broken authentication and session management: This type of attack takes advantage of weak or poorly implemented authentication and session management controls to gain unauthorized access to the API.
  • Machine-in-the-middle (MITM) attacks: This type of attack involves intercepting and manipulating the communication between the mobile app and the API.
  • Cross-site scripting (XSS): This type of attack injects malicious code into a web page viewed by the user, which can then access and manipulate the API.

Frequently Asked Questions (FAQ)

Securing an API for mobile apps involves a combination of various measures, such as using strong authentication and authorization mechanisms, implementing data encryption, conducting regular vulnerability assessments, rate limiting to prevent abuse, and applying the principle of least privilege.

Protecting your API key for mobile apps involves not embedding it directly in your app’s code, instead using secure storage solutions or server-side environment variables. You can also restrict the use of the API key to specific IP addresses, referrers, or apps to minimize the risk of misuse if the key is compromised.

An API (application programming interface) is a set of rules and protocols for how different software components should interact.

APIs need to be secure because they can provide potential attack opportunities for malicious actors, especially if they handle sensitive data or critical business functionality.

API authentication can be secured using API keys, OAuth tokens, or JSON Web Tokens (JWT). It is important to transmit these credentials over encrypted channels using HTTPS. Applying multi-factor authentication (MFA) strengthens the security of API authentication.

API keys and API tokens serve similar purposes in identifying the calling program in an API request, but they differ in their usage and security implications. 

API keys are typically used for identification and are often included in the request header. API tokens are used not only for identification but also for authentication, and can carry additional information such as permissions and expiration time.

A common mistake developers make with API security is assuming that internal APIs do not need the same level of security as public-facing APIs.

This can lead to inadequate security measures for internal APIs, leaving them vulnerable to attacks that gain access to the internal network.

One common mistake in API key security is hardcoding the API keys directly into the application. This makes the keys easily accessible if the source code is ever exposed or the app is decompiled. Instead, keys should be stored securely and retrieved through secure means.

Best practices for API security for mobile apps include using secure protocols like HTTPS for data transmission, implementing strong authentication and authorization mechanisms, regularly updating and patching the APIs to fix security vulnerabilities, encrypting sensitive data, and maintaining detailed logs for incident response.

Securing API authentication and authorization involves strategies like using secure and standardized protocols (OAuth2, OpenID Connect), token-based authentication methods, rotating API keys or tokens regularly, and incorporating MFA. It is important to adopt the principle of least privilege, giving the minimum permissions necessary for a service to function.

API security for mobile apps helps maintain the performance and reliability of the apps, creating trust. Good API security practices can help businesses stay compliant with regulatory standards and avoid the damage associated with security incidents.

Why customers choose Akamai

Akamai powers and protects life online. Leading companies worldwide choose Akamai to build, deliver, and secure their digital experiences — helping billions of people live, work, and play every day. Akamai Connected Cloud, a massively distributed edge and cloud platform, puts apps and experiences closer to users and keeps threats farther away.

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