1. Rhee, M.Y.: Internet Security: Cryptographic Principles, Algorithms and Protocols. Wiley, New York (2003)
2. Data Security Overview BITUG, December 2017. https://dan-lewis-fns9.squarespace.com/s/Data-Security-BITUG-DEC-2017.pdf
3. Malware. https://searchsecurity.techtarget.com/definition/malware
4. The Internet comes down with a virus. The New York Times. https://www.nytimes.com/times-insider/2014/08/06/1988-the-internet-comes-down-with-a-virus
5. Barwise, M.: What is an internet worm? BBC (2010). http://www.bbc.co.uk/webwise/guides/internet-worms