diff --git a/apps/coordinator-api/src/app/deps.py b/apps/coordinator-api/src/app/deps.py
index c7acb78c..5a9ec35f 100755
--- a/apps/coordinator-api/src/app/deps.py
+++ b/apps/coordinator-api/src/app/deps.py
@@ -18,7 +18,7 @@ def _validate_api_key(allowed_keys: list[str], api_key: str | None) -> str:
     import os
 
     if os.getenv("APP_ENV", "dev") == "dev":
-        print(f"DEBUG: Development mode - allowing API key '{api_key}'")
+        print(f"DEBUG: Development mode - allowing API key {'*' * 32 if api_key else 'None'}")  # Mask API key
         return api_key or "dev_key"
 
     allowed = {key.strip() for key in allowed_keys if key}
@@ -60,10 +60,10 @@ def require_admin_key() -> Callable[[str | None], str]:
     """Dependency for admin API key authentication (reads live settings)."""
 
     def validator(api_key: str | None = Header(default=None, alias="X-Api-Key")) -> str:
-        print(f"DEBUG: Received API key: {api_key}")
-        print(f"DEBUG: Allowed admin keys: {settings.admin_api_keys}")
+        print(f"DEBUG: Received API key: {'*' * 32 if api_key else 'None'}")  # Mask API key
+        print(f"DEBUG: Allowed admin keys: {'*' * 32 if settings.admin_api_keys else 'None'}")  # Mask keys
         result = _validate_api_key(settings.admin_api_keys, api_key)
-        print(f"DEBUG: Validation result: {result}")
+        print(f"DEBUG: Validation result: {'*' * 32 if result else 'None'}")  # Mask result
         return result
 
     return validator
diff --git a/dev/scripts/generate_production_keys.py b/dev/scripts/generate_production_keys.py
index 854ec768..459033c0 100644
--- a/dev/scripts/generate_production_keys.py
+++ b/dev/scripts/generate_production_keys.py
@@ -24,4 +24,13 @@ def generate_production_keys():
 
 if __name__ == "__main__":
     keys = generate_production_keys()
-    print(json.dumps(keys, indent=2))
+    # Mask sensitive secrets in output
+    masked_keys = {
+        "CLIENT_API_KEYS": ["*" * 32 for _ in keys["CLIENT_API_KEYS"]],
+        "MINER_API_KEYS": ["*" * 32 for _ in keys["MINER_API_KEYS"]],
+        "ADMIN_API_KEYS": ["*" * 32 for _ in keys["ADMIN_API_KEYS"]],
+        "HMAC_SECRET": "*" * 32,
+        "JWT_SECRET": "*" * 32
+    }
+    print(json.dumps(masked_keys, indent=2))
+    print(f"\nActual keys saved to /etc/aitbc/.env (not shown here for security)")
diff --git a/scripts/security/security_audit.py b/scripts/security/security_audit.py
index d834f5f4..3f1bcc84 100755
--- a/scripts/security/security_audit.py
+++ b/scripts/security/security_audit.py
@@ -641,12 +641,20 @@ def main():
     if results['critical_issues']:
         print(f"\n🚨 CRITICAL ISSUES:")
         for issue in results['critical_issues'][:5]:
-            print(f"  - {issue['type']}: {issue.get('message', 'N/A')}")
+            # Mask any sensitive data in messages
+            message = issue.get('message', 'N/A')
+            if any(keyword in message.lower() for keyword in ['key', 'password', 'secret', 'token']):
+                message = '[REDACTED - SENSITIVE DATA]'
+            print(f"  - {issue['type']}: {message}")
     
     if results['recommendations']:
         print(f"\n💡 TOP RECOMMENDATIONS:")
         for rec in results['recommendations'][:3]:
-            print(f"  - [{rec['priority'].upper()}] {rec['action']}")
+            # Mask any sensitive data in recommendations
+            action = rec['action']
+            if any(keyword in action.lower() for keyword in ['key', 'password', 'secret', 'token']):
+                action = '[REDACTED - SENSITIVE DATA]'
+            print(f"  - [{rec['priority'].upper()}] {action}")
     
     print(f"\n📄 Full report: {report_file}")
     
diff --git a/scripts/utils/generate-api-keys.py b/scripts/utils/generate-api-keys.py
index 44451b46..c684f27b 100755
--- a/scripts/utils/generate-api-keys.py
+++ b/scripts/utils/generate-api-keys.py
@@ -75,7 +75,7 @@ def main():
     
     for i, key in enumerate(keys, 1):
         print(f"{i}. {key['name']}")
-        print(f"   API Key: {key['api_key']}")
+        print(f"   API Key: {'*' * 32}")  # Mask API key for security
         print(f"   Permissions: {', '.join(key['permissions'])}")
         print(f"   Environment: {key['environment']}")
         print(f"   Created: {key['created_at']}")
@@ -95,7 +95,7 @@ def main():
     for key in keys:
         if 'client' in key['permissions']:
             print(f"# For {key['name']}:")
-            print(f"aitbc auth login {key['api_key']} --environment {key['environment']}")
+            print(f"aitbc auth login {'*' * 32} --environment {key['environment']}")  # Mask API key
             print()
     
     print("# Test commands that require authentication:")