Network threats

Network threats

1. Threats

   • Malware
     • Malicious software
       • Worm = self-replicating file that clogs up network
       • Virus = self replicates and corrupts files.
       • Trojan Horse = malicious software designed to look benevolent to trick OS into letting it in.
     • Anti-malware software
       • detects, block and removes malware
   • Phishing = using fake emails or other forms of contact to trick people into giving away confidential details such as passwords.
     • Network policies
     • User access
     • Network forensics
   • social engineering
     • tricking people into giving hackers unauthorised access to a network as people are the weakest link
     • User access
   • Brute force
     • trying every possible combination until they reach the right one
     • Strong passwords
     • Limited attempts
     • encryption
   • denial of service service attacks
     • DoS attack = sending so many requests to a server that it crashes
     • backups
   • data interception and theft
     • Stealing data from suorces
     • encryption
     • passwords
     • firewalls
   • SQL injection
     • Using commands to gain unauthorised access into an SQL database
     • firewalls
     • passwords
     • validation and authentication
   • poor network policy
     • Allows hackers to gain unauthorised access and move around a network easily
     • improving network policy
     • passwords
     • penetration testing
     • user access