Explore a comprehensive conference talk on implementing granular trust in cybersecurity systems. Delve into the intricacies of trust models, trust levels, and variable authentication. Learn about breaking glass scenarios, highly granular access control, and the importance of separating source and target. Discover how to define application access levels, trust levels, and use big buckets for effective implementation. Examine real-world examples, including mobile device security and unmanaged device scenarios. Gain insights into future work, including percentage-based trust, emergency access protocols, and disaster recovery strategies. Understand the challenges and solutions in validating security measures, handling deadlocks, and managing security operations centers.