The AWS shared responsibility model
For data protection purposes, we recommend that you protect AWS account credentials and set up individual users with AWS IAM Identity Center or AWS Identity and Access Management (IAM). That way, each user is given only the permissions necessary to fulfill their job duties. We also recommend that you secure your data in the following ways:
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Use multi-factor authentication (MFA) with each account.
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Use SSL/TLS to communicate with AWS resources. We require TLS 1.2 and recommend TLS 1.3.
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Set up API and user activity logging with AWS CloudTrail. For information about using CloudTrail trails to capture AWS activities, see Working with CloudTrail trails in the AWS CloudTrail User Guide.
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Use AWS encryption solutions, along with all default security controls within AWS services.
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Use advanced managed security services such as Amazon Macie, which assists in discovering and securing sensitive data that is stored in Amazon S3.
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If you require FIPS 140-3 validated cryptographic modules when accessing AWS through a command line interface or an API, use a FIPS endpoint. For more information about the available FIPS endpoints, see Federal Information Processing Standard (FIPS) 140-3
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We strongly recommend that you never put confidential or sensitive information, such as your customers' email addresses, into tags or free-form text fields such as a Name field. This includes when you work with IAM or other AWS services using the console, API, AWS CLI, or AWS SDKs. Any data that you enter into tags or free-form text fields used for names may be used for billing or diagnostic logs. If you provide a URL to an external server, we strongly recommend that you do not include credentials information in the URL to validate your request to that server.
Data encryption in IAM and AWS STS
Data encryption typically falls into two categories: encryption at rest and encryption in transit.
Encryption at rest
Data that is collected and stored by IAM is encrypted at rest.
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IAM – Data collected and stored within IAM includes IP addresses, customer account metadata, and customer identifying data that includes passwords. Customer account metadata and customer identifying data are encrypted at rest using AES 256 or is hashed using SHA 256.
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AWS STS – AWS STS does not collect customer content except for service logs that log successful, erroneous, and faulty requests to the service.
Encryption in transit
Customer identifying data, including passwords, is encrypted in transit using TLS 1.2 and 1.3. All AWS STS endpoints support HTTPS for encrypting data in transit. For a list of AWS STS endpoints, see AWS STS Regions and endpoints.
Key management in IAM and AWS STS
You can't manage encryption keys using IAM or AWS STS. For more information about encryption keys, see What is AWS KMS? in the AWS Key Management Service Developer Guide
Internetwork traffic privacy in IAM
and AWS STS
Requests to IAM must be made using Transport Layer Security protocol (TLS). You can secure connections to the AWS STS service by using VPC endpoints. To learn more, see Interface VPC endpoints.
