The increasing usages of Web-based technologies have enabled numerous benefits in people’s daily life, from mobile social applications to heterogeneous high performance computing. The implementations of the Internet-related solutions are considered one of the important approaches for enterprises to grow their businesses. However, novel mechanisms using networking techniques also introduce new threats harming users’ privacy information and operations. Two critical aspects in Web security are cyber security and cloud computing. IEEE CSCloud 2016 focuses on these two aspects and aims to gather recent achievements in cyber security and cloud computing fields. The conference invites those papers that concentrate on new paradigms, algorithms, and applications in cyber security or cloud computing. We also encourage researchers and practitioners to build up the connections between academia and industry.