, Marwan Darwish, Dr. Abdelkader Ouda. 2017. “An Enhanced Cloud-Based Secure Authentication (ECSA) Protocol Suite for Prevention of Denial-of-Service (DoS) Attacks”. International Journal on Future Revolution in Computer Science &Amp; Communication Engineering 3 (11):485-96. http://www.ijfrcsce.org/index.php/ijfrcsce/article/view/336.