1.6 system security

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1.1 - 1.8 Mapa Mental sobre 1.6 system security, creado por liam oneill el 21/03/2018.
liam oneill
Mapa Mental por liam oneill, actualizado hace más de 1 año
liam oneill
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Resumen del Recurso

1.6 system security
  1. forms of attack
    1. Malware
      1. includes viruses, worms and trojan horses
        1. worms
          1. replicate itself in order to spread across a network
            1. in order to do this it exploits vulnerabilities in a network
          2. torjan horse
            1. designed to access a computer by misleading the user of its intent
          3. malicious software is designed to cause damage to a network or computer system
            1. it attaches itself to files and programs on a computer system
          4. phishing
            1. designed to acquire sensitive information
              1. commonly sent through email
                1. telephone phishing
                  1. direct phone calls that pretend to be an official service
                2. brute force
                  1. trial and error
                    1. can be used for gaining access to password-based entry systems
                    2. consists of an attacker entering possible passwords and phrases until one is correct
                    3. data interception and theft
                      1. packets that travel over networks can be intercepted
                        1. if packets are encrypted a key will be needed
                        2. packets reassembled by using a signature
                        3. SQL detection
                          1. social engineering
                            1. relies on human interaction
                              1. involves tricking users into breaking normal security procedures
                              2. DDOS
                                1. overloading a website with unwanted traffic
                                  1. uses a number of computers over a network of infected machines which send requests to a website which would bring it offline
                                2. preventing attacks
                                  1. penetration testing
                                    1. tests conducted in a controlled envirmoent
                                    2. network forensics
                                      1. involves the examination of data sent across a network
                                        1. packet sniffing
                                          1. helps a user understand what is being sent across the network all the time
                                            1. packet sniffing without written permission is a breach of the law
                                      2. network policies
                                        1. outline rules for network access
                                          1. acceptable use policy (AUP)
                                          2. anti malware software
                                            1. aims to prevent malware from entering the system
                                            2. firewalls
                                              1. software that performs as a barrier
                                                1. not 100% effective
                                                  1. can be held on a server or a stand alone computer
                                              2. passwords
                                                1. encryption
                                                  1. data is translated into code
                                                    1. julius ceasr
                                                      1. the key tells how many places along the alphabet the real letter is
                                                    2. user access levels
                                                      1. allows a system administrator to set up a hierarchy of users
                                                        1. lower level users = limited access
                                                      2. threats posed to networks
                                                        1. poor network policy
                                                          1. can expose a network to many threats
                                                            1. most networks restrict users to what they can and cant do
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