An immutable audit log records every event exactly as it happened. Each entry is cryptographically sealed. No one can change it without detection. This creates a permanent, tamper-proof timeline of actions, queries, and system changes. Security teams use it to verify compliance, spot abuse, and trace breaches without losing trust in the source.
Dynamic data masking hides sensitive information at the moment it is accessed. Instead of returning raw values, the system replaces them with safe placeholders — either partial data or fully obfuscated text, depending on the rules. Unlike static masking, dynamic masking applies in real time based on context. This means the same query can produce different views depending on the user role, access policy, or location.
When these two features work together, they deliver both integrity and privacy. Immutable audit logs ensure that masked data requests are still recorded in full detail for authorized review, without exposing raw sensitive fields to unauthorized eyes. Every access attempt, every mask rule trigger, every override — all hardened against tampering.