Does cloud computing increase security problems?

Introduction
Definition of cloud computing
Services and security provided in cloud computing
Thesis: Does cloud computing increase security problems?
Services Models
Application
SaaS
Platform
PaaS
Infrastructure
IaaS
Data Security
C.I.A. Triad
Confidentiality
Integrity
Availability
Cloud Computing and Virtualization
Server Virtualization at work
Incorporating virtualization in cloud computing
Data Segregation
Encryption Schemes
Latest Technologies
Data Masking Technology
Definition
Masking Techniques
Secure Logic Migration and Execution Technology
Data Traceability Technology
Latest Techniques
Authentication and Identity
Application of Encryption for Data in Motion
Data Masking
Conclusion
Restate topic
Summarize
Tie all ideas together