System Security

System Security

1. Threats posed to Networks:

   • Malware
     • - AKA 'Malicious Software' Software - Includes; Viruses, Worms and Trojan horses
     • Trojan Horses
       • Designed to access a computer by misleading users of its intent
         • Often looks like a real piece of software
           • Designed to give unauthorised access to a computer system
             • Gives people the ability to remotely control the computer
     • Worms
       • Sub-class of viruses
         • Replicates itselt in order to spread to other computer networks
           • Does not need to attach to a file/program
             • Does NOT require human interaction to run
     • Viruses
       • Malicious software designed to cause harm to a network or computer system
         • Attaches itself to programs or files
           • Requires human interaction to actually run (opening the file)
             • Can affect components in the operating system
   • Social Engineering (Phishing)
     • People as the weak point in secure systems
     • Telephone Phishing
     • Computer Phishing
     • Relies on human interaction (social skills)
     • Involves tricking users into breaking their own systems
     • Does not revolve around technical cracking techniques such as worms or viruses
   • Brute Force Attacks
   • DDOS
   • Data interception and Theft

2. Identifying and Preventing Vulnerabilities

   • Penetration Testing
   • User Access Levels
   • Network Forensics
   • Firewalls
   • Network Policies
   • Anti-Malware Software
   • Encryption
   • Passwords