I applied the PATCH 5344 supree, manually, by going through each file change as mentioned in this link
After successful changes, to test whether the patch is applied or not, I used this magento.com/security-patch link.
This showed me that the site is safe now by showing this message:

Now after one day (approx.), when I checked again with the same link, It showing me the following message:

What could be the issue? Is the site is showing wrong or my site is been attacked by hacker again?