hello and welcome back to this cyber security awareness course
in this video we're going to take an introduction to cyber security
now beginning by the definition of cyber security it is defined as the protection of data
from being stolen damaged altered or even encrypted without the ownership's approval
now in order for us to apply all of these things and in order for us to achieve all of these things
we have to stick with these concepts the first one is confidentiality the second one is integrity and
the third one is availability these concepts are all interconnected with each other meaning that
one cannot exist without the others let's go ahead and explain each and every one of those beginning
by confidentiality it is defined as the security principle that controls access to information
it is designed to ensure that wrong people can never gain access to sensitive information
meanwhile ensuring that the right people are the only ones who can access it integrity it refers
to the accuracy and completeness of data meaning that data is supposed to be correct and without
any modifications data availability it means that information is only accessible to authorized users
it provides an assurance that your system and data can be accessed by authoricated users
whenever they are needed now i know that these concepts are kind of new to most of us so in order
for us to have a better understanding of these things let's go ahead and jump onto this example
so this is a demonstration of the cia of security and cia it stands for
confidentiality integrity and availability considering that we have a bunch of data
over here and we've got a user and an attacker and they are both trying to access this data
one thing that we can do to apply the cia of security is by doing encryption now encryption
means changing the data from being a plain text to something else called a cipher text
in which this cipher text is only understandable by the user and not understandable by the attacker
so in this way we would have applied confidentiality by making sure that the
user is the only one authorized to access the data and the attacker is not because in the end
of the day they won't be able to understand what this data is and we would have applied integrity
by making sure that the data is complete and without any modifications because if the attacker
doesn't understand this data they won't be able to modify it and then we would have applied
availability by making sure that this data is only available to the user since they are the
only ones who can understand this data and the attacker won't be able to understand it
now later on in this course we're going to discuss the term encryption and learn more about it but
for now this is it for this video i hope that you liked it and i'll see you in the next video