AWS Cognito just announced some security features to help with that. https://aws.amazon.com/about-aws/whats-new/2017/11/announcing-advanced-security-features-b

AWS Cognito just announced some security features to help with that. https://aws.amazon.com/about-aws/whats-new/2017/11/announcing-advanced-security-features-beta-for-amazon-cognito/ https://aws.amazon.com/about-aws/whats-new/2017/11/announcin...