Why is anomaly or entropy detection not enough?

Inference-based methods — anomaly detection, entropy analysis, and metadata heuristics — operate above the file and guess from patterns, typically with 60 to 85 percent accuracy and high false-positive rates. Modern ransomware is engineered specifically to evade them. Deep File Inspection inspects inside the file instead and produces a deterministic result. This is a fundamental architectural difference, not a tuning problem.