This two volume set LNCS 10602 and LNCS 10603 constitutes the thoroughly

refereed post-conference proceedings of the Third International

Conference on Cloud Computing and Security, ICCCS 2017, held in Nanjing,

China, in June 2017.

The 116 full papers and 11 short papers of these volumes were carefully

 reviewed and selected from 391 submissions. The papers are organized

in  topical sections such as: information hiding; cloud computing;  IOT

applications; information security; multimedia applications; optimization

 and classification.