1. NIST. https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-145.pdf
2. https://www.researchgate.net/publication/241195178/figure/fig2/AS:400869486022664@1472586141957/NIST-Visual-Model-of-Cloud-Computing-a-Service-Models-Cloud-computing-can-be-classified.png
3. Surabhi, C.H., Gunalan, B.: A review of secure data sharing in cloud computing. Int. J. Comput. Trends Technol. 30(3), 152–156 (2015)
4. https://www.darkreading.com/threat-intelligence/the-rising-tide-of-a-crimeware-as-a-service/d/d-id/1329102
5. https://www.slideshare.net/InteropMumbai2009/sameer-ratolikar-crimeware-attacks-defenses-interop-mumbai-2009