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Language: en

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hello and welcome back to this 
cyber security awareness course  

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in this video we're going to take 
an introduction to cyber security  

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now beginning by the definition of cyber 
security it is defined as the protection of data  

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from being stolen damaged altered or even 
encrypted without the ownership's approval  

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now in order for us to apply all of these things 
and in order for us to achieve all of these things  

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we have to stick with these concepts the first one 
is confidentiality the second one is integrity and  

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the third one is availability these concepts are 
all interconnected with each other meaning that  

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one cannot exist without the others let's go ahead 
and explain each and every one of those beginning  

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by confidentiality it is defined as the security 
principle that controls access to information  

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it is designed to ensure that wrong people 
can never gain access to sensitive information  

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meanwhile ensuring that the right people are the 
only ones who can access it integrity it refers  

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to the accuracy and completeness of data meaning 
that data is supposed to be correct and without  

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any modifications data availability it means that 
information is only accessible to authorized users  

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it provides an assurance that your system and 
data can be accessed by authoricated users  

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whenever they are needed now i know that these 
concepts are kind of new to most of us so in order  

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for us to have a better understanding of these 
things let's go ahead and jump onto this example  

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so this is a demonstration of the 
cia of security and cia it stands for  

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confidentiality integrity and availability 
considering that we have a bunch of data  

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over here and we've got a user and an attacker 
and they are both trying to access this data  

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one thing that we can do to apply the cia of 
security is by doing encryption now encryption  

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means changing the data from being a plain 
text to something else called a cipher text  

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in which this cipher text is only understandable 
by the user and not understandable by the attacker  

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so in this way we would have applied 
confidentiality by making sure that the  

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user is the only one authorized to access the 
data and the attacker is not because in the end  

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of the day they won't be able to understand what 
this data is and we would have applied integrity  

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by making sure that the data is complete and 
without any modifications because if the attacker  

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doesn't understand this data they won't be able 
to modify it and then we would have applied  

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availability by making sure that this data is 
only available to the user since they are the  

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only ones who can understand this data and 
the attacker won't be able to understand it  

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now later on in this course we're going to discuss 
the term encryption and learn more about it but  

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for now this is it for this video i hope that 
you liked it and i'll see you in the next video