Enable VPC Access for AWS Lambda Functions
Ensure AWS Lambda functions are configured to access resources in a Virtual Private Cloud (VPC).
Exposed AWS Lambda Functions
Ensure that your Amazon Lambda functions are not exposed to everyone.
Lambda Functions with Admin Privileges
Ensure no Lambda function available in your AWS account has admin privileges.
AWS Lambda Unknown Cross Account Access
Ensure AWS Lambda functions do not allow unknown cross account access via permission policies.
Lambda Runtime Environment Version
Ensure that the latest version of the runtime environment is used for your AWS Lambda functions.
Using An IAM Role For More Than One Lambda Function
Ensure AWS Lambda functions do not share the same IAM execution role.
Ensure that tracing (i.e. Lambda support for Amazon X-Ray service) is enabled for your AWS Lambda functions.