Serverless Security: AWS Lambda, Azure Functions & Cloud Run Guide
Secure your serverless applications with this guide covering function-level security, least privilege, event injection prevention, and serverless architecture best practices.
Serverless Security Challenges
Serverless computing introduces unique security challenges. Functions execute in shared environments with expanded attack surfaces through events and triggers.
Event Injection Risk
Attackers can inject malicious payloads through event triggers like API Gateway, S3, or message queues, leading to command injection.
Attack Vectors
Event Injection
Malicious event payloads
Over-Privileged
Excessive IAM permissions
Insecure Deps
Vulnerable packages
Secrets Exposure
Hardcoded credentials
Security Controls
Input Validation
- Validate all events
- Type checking
- Length limits
- Sanitization
Least Privilege
- Minimal IAM
- Specific resources
- No wildcards
- Regular reviews
Secrets Mgmt
- Secrets Manager
- No hardcoding
- Rotation
- Audit access
Shift Left
Secure serverless requires application-level controls since you don't control the infrastructure. Focus on code and configuration security.
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