AC-9313::Database record tampering

Author: glo60612

app/code/Magento/Customer/Model/ResourceModel/CustomerRepository.php

@@ -204,6 +204,9 @@ public function save(CustomerInterface $customer, $passwordHash = null)
         if ($customer->getId()) {
             $prevCustomerData = $this->getById($customer->getId());
             $prevCustomerDataArr = $this->prepareCustomerData($prevCustomerData->__toArray());
+
+            /** customer update time change created date is not allowed  */
+            $customer->setCreatedAt($prevCustomerData->getCreatedAt());
         }
         /** @var $customer \Magento\Customer\Model\Data\Customer */
         $customerArr = $customer->__toArray();