So mit neuen UI Ideen und so

backend/src/services/auditService.ts

@@ -0,0 +1,35 @@
+import { v4 as uuidv4 } from 'uuid'
+import { db } from '../config/secureDatabase'
+import { logger } from '../utils/logger'
+import type { Request } from 'express'
+
+export function logSecurityAudit(
+  action: 'create' | 'read' | 'update' | 'delete' | 'login' | 'logout' | 'failed_login',
+  entityType: string,
+  entityId: string,
+  userId: string,
+  req: Request,
+  riskLevel: 'low' | 'medium' | 'high' | 'critical' = 'low'
+) {
+  try {
+    db.prepare(`
+      INSERT INTO security_audit_log (
+        id, entity_type, entity_id, action, user_id,
+        timestamp, ip_address, user_agent, risk_level
+      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
+    `).run(
+      uuidv4(),
+      entityType,
+      entityId,
+      action,
+      userId,
+      new Date().toISOString(),
+      (req as any).ip || (req as any).connection?.remoteAddress,
+      req.get('user-agent'),
+      riskLevel
+    )
+  } catch (error) {
+    logger.error('Failed to log security audit:', error)
+  }
+}
+