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How to Assess Your API Security

How can I assess my API Security?

Assessing the security of an API is an important process that helps maintain the integrity, confidentiality, and availability of both the API itself and the sensitive data it processes. 

An assessment aims to identify potential vulnerabilities, simulate a range of attack scenarios, and evaluate the robustness of the currently implemented security measures. 

The key areas to examine during the assessment are authentication and authorization mechanisms, encryption standards, error handling procedures, rate limiting measures, and input validation. 

The goal of this evaluation is to reveal any weak spots that may be vulnerable to exploitation so the organization can fix them.

Why should I assess my API security?

Diagram illustrating how APIs support web applications

APIs serve as the backbone of many web applications, mobile applications, and microservices frameworks. Their widespread use has made them an attractive target of cybercrime. 

Numerous breaches have stemmed from the lack of API security, leading to major hacks like data leakage, unauthorized access, and service disruptions. 

An API security assessment allows for early detection and mitigation of risks associated with APIs, ensuring that they remain secure.

How can Akamai help with API Security?

Akamai provides comprehensive API security with full visibility, endpoint discovery, and signature and behavioral detections, as well as in-line and automated response policies. 

Akamai’s flagship WAAP solution App & API Protector, protects websites, applications, and APIs by blocking incoming malicious traffic in real time. Within traffic accepted by App & API Protector and anywhere across the enterprise, API Security discovers all APIs, uses behavioral analytics to detect abnormal activity, and automatically responds to threats and abuse. Additionally, Akamai Identity Cloud can fortify user authentication protocols. Our team of security professionals, from managed services to threat hunting experts, can also impart expert advice on the best practices for API security, aiding your business in building a secure API environment.

Diving into the details of API security

A detailed assessment of API security should consider several key factors:

Authentication and authorization: APIs should implement robust mechanisms, such as OAuth or JWT, to ensure that only legitimate and authorized users or services can access the API.

Encryption: All data transmitted over APIs should be encrypted using secure protocols like HTTPS to guard against eavesdropping and machine-in-the-middle attacks.

Error handling: Proper error handling is crucial to avoid potential information leakage through error messages.

Rate limiting: Implementing rate limiting helps mitigate API abuse by restricting the number of requests a user or service can make within a given time frame.

Input validation: All inputs should be validated and sanitized to prevent common injection attacks.

To have complete API security, regular vulnerability assessments and penetration testing are needed. These tests allow businesses to identify and address potential security issues proactively, ensuring that the API stays secure, efficient, and reliable.

API security assessment questionnaire

An API security assessment questionnaire is an important tool for evaluating the security of an organization’s APIs. 

Below are 30 questions that can be included in an API security assessment questionnaire to help identify security risks and vulnerabilities.

  • What is the purpose of the API?
  • What data or services does the API provide access to?
  • What is the API’s intended audience?
  • Is there a documented security policy for the API?
  • How is API access controlled and authenticated?
  • How are API keys managed and distributed?
  • Is the API endpoint protected by SSL/TLS?
  • What encryption algorithms and protocols are used to protect API data in transit?
  • How are sensitive data and credentials transmitted over the API?
  • How are error messages handled and returned to the client?
  • Is the API protected against cross-site request forgery (CSRF) attacks?
  • Is the API protected against SQL injection attacks?
  • Is the API protected against cross-site scripting (XSS) attacks?
  • Are there any known vulnerabilities in the API or its dependencies?
  • How is the API protected against denial-of-service (DoS) attacks?
  • How is the API monitored for security threats and incidents?
  • Are there any third-party APIs or integrations that the API relies on?
  • How are third-party APIs or integrations authenticated and authorized?
  • How is API usage tracked and audited?
  • How is API versioning handled?
  • Are there any restrictions or rate limiting on API usage?
  • How are API logs and access data stored and protected?
  • Is there a backup and disaster recovery plan for the API?
  • How are API changes tested and verified before deployment?
  • What is the process for reporting and responding to API security incidents?
  • Is there a bug bounty program in place for the API?
  • How are security patches and updates to the API implemented?
  • How are API security risks and vulnerabilities identified and mitigated?
  • What security certifications or standards does the API comply with?
  • How are API security practices and policies communicated to developers and users?

By answering these questions, an organization can gain a better understanding of the security state of their APIs. It is important to conduct API security assessments regularly to ensure that security risks are addressed and that the APIs stay secure.

Frequently Asked Questions (FAQ)

An API security assessment is a systematic evaluation of an API’s security measures to identify vulnerabilities, potential risks, and weaknesses. This involves reviewing and testing aspects like authentication, authorization, encryption, rate limiting, and input validation.

The goal is to ensure that the API provides secure communication and properly safeguards the sensitive data it handles.

Testing API security involves a number of steps like validating authentication and authorization protocols, checking for data leaks in response headers or error messages, testing encryption methods, verifying rate limiting is in place to prevent abuse, and input validation to avoid injection attacks. Tools like Postman, SoapUI, and automated solutions like OWASP ZAP can assist in conducting these tests.

API assessment involves reviewing the API’s design, implementation, and usage. This includes testing for secure communication, verifying proper authentication and authorization, checking for vulnerabilities such as SQL injection or cross-site scripting, and ensuring best practices in error handling and rate limiting.

Automated tools and manual penetration testing can be used for a comprehensive assessment.

Performing security testing using an API involves validating its authentication and authorization mechanisms, checking the security of data transmission, testing for vulnerabilities like injection attacks, and examining the API’s error handling and rate-limiting mechanisms. Tools like Postman, SoapUI, and OWASP ZAP can aid in this process.

An API is a set of protocols and definitions that allow different software applications to communicate with each other. 

An API key is a unique identifier used to authenticate a user, developer, or calling program to an API. It’s essentially a secret token that is used to control access to the API.

API security testing can involve methods like static and dynamic analysis, fuzz testing, and penetration testing. These methods help to identify vulnerabilities, test the resilience of the system against unexpected or malformed input, and simulate real-world attacks to assess the security of the API.

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.

Explore all Akamai security solutions