Proofpoint Cloud App Security Broker is a cloud security solution that protects email accounts, applications, and infrastructure against account compromise, malicious files, data loss, and compliance risks. The platform secures cloud users, applications and data from threats across Microsoft 365, Google Workspace and Okta services. It correlates threat intelligence across phishing attempts, known threat infrastructure, credential dumps, and brute-force campaigns. The solution combines cross-channel threat intelligence with user-specific risk indicators to analyze user behavior and detect anomalies across cloud applications and tenants. Through machine learning and threat intelligence, it detects when cloud accounts are compromised. The platform includes context-based data loss prevention capabilities that provide insight to prevent losses from negligent, compromised or malicious users. It applies consistent data loss prevention policies across email and cloud applications. The solution helps discover shadow IT and govern cloud and third-party OAuth applications, with automated remediation capabilities for malicious and abused OAuth applications. It offers deployment options including cloud API connectors, adaptive access controls, and cloud proxy configurations. The platform supports applications such as Microsoft 365, Google Workspace, Box, Salesforce, AWS, and Slack, and integrates with SIEMs, SOARs, and ticketing systems through RESTful APIs.