GraphQL security best practices - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is the purpose of query depth limiting in GraphQL?

Query depth limiting restricts how deep a client can nest queries. This helps prevent overly complex queries that can overload the server and cause performance issues.

beginner

Why should you validate incoming GraphQL queries?

Validating queries ensures they follow the schema rules and do not contain malicious or malformed requests. This protects the server from unexpected errors and attacks.

beginner

How does rate limiting improve GraphQL API security?

Rate limiting controls how many requests a client can make in a given time. It prevents abuse like denial-of-service attacks by limiting excessive query traffic.

beginner

What is the role of authentication and authorization in GraphQL?

Authentication verifies who the user is, while authorization controls what data or actions the user can access. Both are essential to protect sensitive data and operations.

intermediate

Why should you avoid exposing internal error details in GraphQL responses?

Exposing detailed errors can reveal sensitive information about the server or database structure. It's safer to return generic error messages to avoid helping attackers.

Which practice helps prevent very complex GraphQL queries that can slow down the server?

A Schema stitching

B Using fragments

C Query depth limiting

D Batching queries

Query depth limiting restricts how deeply queries can nest, preventing overly complex requests.

What does rate limiting protect a GraphQL API from?

A Unauthorized data access

B Excessive request flooding

C Schema validation errors

D Slow network connections

Rate limiting controls the number of requests to prevent flooding and denial-of-service attacks.

Why is it important to validate GraphQL queries before execution?

A To encrypt data in transit

B To improve client UI performance

C To cache query results

D To ensure queries match the schema and avoid malicious requests

Validation ensures queries are safe and conform to the schema, protecting the server.

What is the difference between authentication and authorization in GraphQL security?

A Authentication checks user identity; authorization controls access rights

B Authentication encrypts data; authorization decrypts data

C Authentication limits query depth; authorization limits query complexity

D Authentication caches queries; authorization logs queries

Authentication verifies who the user is; authorization decides what they can do.

What should you avoid including in GraphQL error responses to improve security?

A Detailed internal server information

B User-friendly messages

C Error codes

D Generic error messages

Detailed internal errors can reveal sensitive info to attackers, so avoid exposing them.

Explain key security best practices to protect a GraphQL API from abuse and attacks.

Think about how to control query complexity, user access, and server responses.

Describe how authentication and authorization work together to secure GraphQL data.

Consider who the user is and what they are allowed to do.