Technology system protection and prevention from attacks

write an essay about “Technologies for system protection and prevention from attacks on UNIX”
Please only focus on technology for protection and prevention from attacks on UNIX. Essay should
include “Abstract. introduction, Body, conclusion and reference“ Take into consideration that: Abstract
around 100 words, introduction to 300 words Conclusion around 200 words The rest is for the body
text. Note: Please make sure the essay is properly cited.