There several security measures a good cloud architecture demands......You may check the below link....

https://en.wikipedia.org/wiki/Cloud_computing_security

You may work on the prevention of Guest VM from malicious code attacks.......

There are different areas in cloud computing where you can apply security features such as

Infrastructure security,

Data & Storage Security,

Identity & Access Management,

Audit & Compliance 

you can refer book "Cloud Security & Privacy" by Tim Mather, Subra Kumarswamy & Shahed Latif

There are so many. You will get it just searching the web but consider VM side channel attack....also.

There several security measures a good cloud architecture demands......You may check the below link....

https://en.wikipedia.org/wiki/Cloud_computing_security

You may work on the prevention of Guest VM from malicious code attacks.......

There are several cloud security related subjects, which are sometimes omitted but require a special attention in preserving Cloud-as-a-Service business /organization / agency’s liability and data security. Those are AUTHENTICATION, CERTIFICATION, and INSURANCE.

See below respective groups of several useful links clarifying these issues:  

CLOUD CHOICES FOR AUTHENTICATION SECURITY

Understanding and selecting authentication methods:

http://www.techrepublic.com/article/understanding-and-selecting-authentication-methods/

Magic quadrant for user authentication:

https://www.wesecure.nl/upload/documents/tinymce/Magic-Quadrant-for-User-Authentication.pdf

How to secure identities in the cloud:

https://www.secureauth.com/SecureAuth/media/Resources/WhitePapers/whitepapersecureidentiesinthecloud.pdf?ext=.pdf

CLOUD SECURITY CERTIFICATION

Internationally recognized cloud computing security certification:

https://www.isc2.org/ccsp/default.aspx

Certificate of cloud security knowledge:

https://cloudsecurityalliance.org/education/ccsk/#_info-video1

Is the Certified Cloud Security Professional certification worth pursuing?

http://searchcloudsecurity.techtarget.com/answer/Is-the-Certified-Cloud-Security-Professional-certification-worth-pursuing

CLOUD SECURITY INSURANCE

Cloud insurance definition:

http://searchcloudstorage.techtarget.com/definition/cloud-insurance

Data breach insurance:

https://databreachinsurancequote.com/cyber-insurance/is-the-cloud-secure/

Cloud computing insurance and liability concerns:

http://www.forbes.com/sites/reuvencohen/2013/04/24/new-cloud-computing-insurance-trys-to-solve-cloud-liability-concerns-for-service-providers/#6d8f1f87746d

Hello,

Indeed, the Cloud Systems are becoming very complex and interconnected. As such the Cyber Security is become more layered and complex. The hardware/software security is parallel to human factor security,