1. Special Report, CMU/SEI-2012-SR-004, Software Engineering Institute;Cummings,2014
2. Cybersecurity watch survey: how bad is the threat? http://resources.sei.cmu.edu/library/asset-view.cfm?assetID=54027 2014
3. Cloud security alliance: top threats to cloud computing v1.0 2010 https://cloudsecurityalliance.org/topthreats/csathreats.v1.0.pdf