Which AWS service can the administrator use to protect the company against attacks?

Explanations:

Amazon Cognito is primarily used for user authentication and management, not for threat detection or prevention. It does not specifically monitor for cryptocurrency-related attacks.

Amazon GuardDuty is a threat detection service that continuously monitors for malicious activity and unauthorized behavior to protect AWS accounts. It can detect anomalies associated with cryptocurrency-related attacks.

Amazon Inspector is a security assessment service that helps improve the security of applications by identifying vulnerabilities but does not focus on monitoring for specific threats like cryptocurrency-related attacks.

Amazon Macie is a data security and privacy service that uses machine learning to automatically discover, classify, and protect sensitive data but does not monitor for attacks or malicious activities related to cryptocurrency.