References

Article: What is… Crypto-ransomware: F-Secure. f-secure. (n.d.). https://www.f-secure.com/v-descs/articles/crypto-ransomware.shtml.

B.A. Al-rimy, M.A. Maarof, S.Z.M. Shaid. Ransomware threat success factors, taxonomy, and countermeasures: a survey and research directions Comput. Secur., 74 (2018), pp. 144-166

de Groot, J. (2020, December 1). A History of Ransomware Attacks: The Biggest and Worst

 Ransomware Attacks of All Time. Digital Guardian. 

Ikeda, S. (2021, May 7). Ransomware Recovery Costs More Than Double in a Year, Now Average $1.85 Million. CPO Magazine.

Kaspersky. (2021, June 15). Ransomware protection: how to keep your data safe in 2021. Usa.kaspersky.com. https://usa.kaspersky.com/resource-center/threats/how-to-prevent-ransomware.

Singh, A., & Singh, A. (2021, May 4). Complete Guide to Ransomware: How to Recover and Prevent an Attack. Backblaze Blog | Cloud Storage & Cloud Backup. https://www.backblaze.com/blog/complete-guide-ransomware/.