diff --git a/app/utils.js b/app/utils.js
index 1ebaa88..6f2d244 100644
--- a/app/utils.js
+++ b/app/utils.js
@@ -2,31 +2,35 @@
 // /app/utils.js
 
 /**
- * Recursively sanitizes a copy of an object by replacing the value of any `password`
- * property with asterisks (*) matching the length of the original password.
- *
+ * Sanitizes an object by replacing sensitive properties with asterisks.
  * @param {Object} obj - The object to sanitize.
- * @returns {Object} - The sanitized copy of the object.
+ * @param {Array} [properties=['password', 'key', 'secret', 'token']] - The list of properties to sanitize.
+ * @returns {Object} - The sanitized object.
  */
-function sanitizeObject(obj) {
-  if (obj && typeof obj === 'object') {
-    const copy = Array.isArray(obj) ? [] : Object.assign({}, obj);
-    
+function sanitizeObject(
+  obj,
+  properties = ["password", "key", "secret", "token"]
+) {
+  if (obj && typeof obj === "object") {
+    const copy = Array.isArray(obj) ? [] : Object.assign({}, obj)
+
     for (const key in obj) {
-      if (obj.hasOwnProperty(key)) { // eslint-disable-line no-prototype-builtins
-        if (key === 'password' && typeof obj[key] === 'string') {
-          copy[key] = '*'.repeat(obj[key].length);
-        } else if (typeof obj[key] === 'object') {
-          copy[key] = sanitizeObject(obj[key]);
+      if (obj.hasOwnProperty(key)) {
+        // eslint-disable-line no-prototype-builtins
+        if (properties.includes(key) && typeof obj[key] === "string") {
+          copy[key] = "*".repeat(obj[key].length)
+        } else if (typeof obj[key] === "object") {
+          copy[key] = sanitizeObject(obj[key], properties)
         } else {
-          copy[key] = obj[key];
+          copy[key] = obj[key]
         }
       }
     }
 
-    return copy;
+    return copy
   }
 
-  return obj;
+  return obj
 }
-exports.sanitizeObject = sanitizeObject;
+
+exports.sanitizeObject = sanitizeObject