With more and more organizations working on the cloud over unsecured
internet, sharing files and emails and saving them on cloud storage is imperative.
Securing the end-user sensitive data in transit has thus started to get maximum priority
to protect it from Cloud company staff, hackers, and data thieves. In this study, an
attempt is made to review the research on end-user data security. There is an urgent
need for solutions for end-users data protection privacy during the times when
migrating from one cloud service provider to another. This chapter reviews the
challenges in Cloud computing services regarding end-user data, analyzes the issues
face, and presents solutions to overcome them. The chapter identifies end-users data
security issues when using cloud computing services. The focus is directed to critical
issues related to unauthorized access to integrity during data in transit. This can be
addressed using Public Key Cryptography or PKI. For Confidentiality and Data
Integrity for end-user data over Cloud. Then for migrating from one cloud service
provider to another, data security and privacy are addressed by Cloud-aware
applications. Lastly, using Multi-Factor Authentication combined with network and
application detection systems, Intrusion Detection Systems, and Network traffic routing
in case of cyber-attacks can help achieve denial of service attack mitigation or prevent
man-in-the-middle and network snooping in Cloud Computing.
Keywords: Cloud Computing, Cloud Security, CSP, PKI, Public Key Cryptography, IDS, Firewall.
