diff --git a/testping1.py b/testping1.py
index fa70655..5de1f96 100644
--- a/testping1.py
+++ b/testping1.py
@@ -275,7 +275,8 @@ def is_reachable(ip, timeout=1):
             raise ValueError(f"Scan range too large ({total_ips} IPs). Maximum 256 IPs allowed per scan.")
 
     except (ValueError, TypeError, RecursionError) as e:
-        logging.error(f"Invalid scan range configuration: {e}")
+        # 🛡️ Sentinel: Sanitize log input to prevent CRLF/Log Injection
+        logging.error(f"Invalid scan range configuration: {repr(str(e))}")
         exit(1)
 
     # ⚡ Bolt: Optimize sequential IP address generation