Lema Blast Radius Monitoring is a third-party risk management platform that tracks and validates vendor access to organizational assets and data. The platform automatically maps interfaces between third-parties and critical systems to identify shadow IT, scope drift, and underestimated inherent risks. The solution operates by fusing three data layers: Lema Intelligence (native monitoring of vendor release notes, documentation, and threat feeds), Security & IT Stack integrations (via API connections to IDP, CSPM, CASB, and EDR tools), and Business Context (ingested from procurement and GRC systems). This approach enables the platform to compare legal agreements against actual technical access patterns. Key capabilities include continuous monitoring of permissions and data access, smart inherent risk estimation that predicts impact before vendor onboarding, and automated scope validation that cross-references contracts against technical signals. The platform detects when vendors exceed their approved access levels or when low-risk classifications don't match actual permissions granted. Lema identifies unauthorized applications, tracks permission escalations, and flags violations when actual data access differs from contractual agreements. The platform provides unified visibility across sanctioned and shadow applications, enabling security teams to understand the full blast radius of third-party relationships and take action when vendors access data beyond their approved scope.