Possible PHP injection (abnormally long string - might be base64)

Possible error message coming from firewalls
Possible PHP injection (abnormally long string - might be base64)
libraries/nextend2/smartslider/smartslider/libraries/storage.php

Explanation
We used base64 codes in some places in this file's case to optimize the loading of a longer list, but we also used it to handle server security limitations, so these files are perfectly safe and you can ignore these messages. You can be sure, wether or not these files were hacked, if you would just firstly make sure, that you have the latest version of our slider installed and then you can download our zip package from our website too, and compare the file this message is pointing to with the file you can find in the zip file. If it's the same code what you have, you can be sure that the zip file has safe codes.