diff --git a/modules/security/malware-scanner.sh b/modules/security/malware-scanner.sh
index 19c392e..0241007 100755
--- a/modules/security/malware-scanner.sh
+++ b/modules/security/malware-scanner.sh
@@ -1644,8 +1644,15 @@ delete_standalone_sessions() {
             ;;
         *)
             # Delete specific session
+            # Validate numeric input
+            if ! [[ "$delete_choice" =~ ^[0-9]+$ ]]; then
+                echo -e "${RED}Invalid choice (must be a number)${NC}"
+                read -p "Press Enter to continue..."
+                return 1
+            fi
+
             if [ "$delete_choice" -lt 1 ] || [ "$delete_choice" -gt ${#standalone_dirs[@]} ]; then
-                echo -e "${RED}Invalid choice${NC}"
+                echo -e "${RED}Invalid choice (out of range)${NC}"
                 read -p "Press Enter to continue..."
                 return 1
             fi
@@ -1766,8 +1773,15 @@ view_scan_results() {
 
             read -p "Scanner: " scanner_choice
 
+            # Validate numeric input
+            if ! [[ "$scanner_choice" =~ ^[0-9]+$ ]]; then
+                echo -e "${RED}Invalid choice (must be a number)${NC}"
+                read -p "Press Enter to continue..."
+                return 1
+            fi
+
             if [ "$scanner_choice" -lt 1 ] || [ "$scanner_choice" -gt ${#available_scanners[@]} ]; then
-                echo -e "${RED}Invalid choice${NC}"
+                echo -e "${RED}Invalid choice (out of range)${NC}"
                 read -p "Press Enter to continue..."
                 return 1
             fi
@@ -1827,12 +1841,19 @@ view_scan_results() {
 
             read -p "Select session (or 0 to cancel): " session_choice
 
+            # Validate numeric input
+            if ! [[ "$session_choice" =~ ^[0-9]+$ ]]; then
+                echo -e "${RED}Invalid choice (must be a number)${NC}"
+                read -p "Press Enter to continue..."
+                return 1
+            fi
+
             if [ "$session_choice" = "0" ]; then
                 return 0
             fi
 
             if [ "$session_choice" -lt 1 ] || [ "$session_choice" -gt ${#standalone_dirs[@]} ]; then
-                echo -e "${RED}Invalid choice${NC}"
+                echo -e "${RED}Invalid choice (out of range)${NC}"
                 read -p "Press Enter to continue..."
                 return 1
             fi