Sensitive Data Scanner by Datadog is a comprehensive security and compliance solution that discovers, classifies, and redacts sensitive data across logs, traces, and telemetry data. The scanner operates at data ingestion, implementing built-in or user-defined rules to hash or redact sensitive information to support compliance with regulations like GDPR, HIPAA, and CCPA. The solution performs real-time scanning of data before it leaves the environment via the Datadog Agent or Observability Pipelines, and provides scanning capabilities across cloud environments including AWS S3 and RDS instances. It operates as part of Datadog's security infrastructure to protect confidential data and prevent potential data leaks and security incidents.