INFORMATICA NA EDUCAÇÃO 1
Autor: MARIA GLORIA BLOG | Publicado: 2013-04-11T16:46:00-07:00


Princípios de segurança da informação 










É importante saber que não existem métodos absolutamente
seguros na internet, todos os métodos foram criados para ser seguros, porém
isso não significa que os princípios nãopossam ser quebrados. &nbsp;Os principais princípios de segurança da
informação são: Confiabilidade, Disponibilidade, Integridade, Autenticidade,
Confidencialidade e o Não repúdio. 

Confiabilidade - É o resultado do
funcionamento de todos os outros princípios, ou seja, os outros são escudos para
manter a confiabilidade. 

Disponibilidade - É o que garante que
o sistema esteja sempre disponível, que não fique fora do ar. Quando você chega
a um banco e o atendente diz que o sistema está fora do ar, isso significa que
falhou o princípio da disponibilidade. 

Integridade - O
principio garante contra a não alteração da informação, ou seja, garante que
seu documento não seja interceptado e alterado por terceiros no meio do caminho.


Autenticidade – O princípio garante
que a origem do documento é autentica, que ele não foi alterado nomeio do
caminho.

Confidencialidade – O princípio garante
que terceiros não tenham acesso a informação, ou seja, garante que ninguém
conheça o conteúdo do documento. 
Não repúdio – o princípio garante
a comprovação de quem cometeu o ato, ou seja, são meios que comprovam o autor
da ação. Isso significa irretratabilidade, a pessoa não pode negar um ato.&nbsp;
Se um destes princípios falhar significa que a rede não é&nbsp;totalmente confiável.

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