Network Security Threats

Network Security Threats

1. Threats

   • DDos
     • Useless data packets are sent to the server in order to make it crash.
     • Distribution denial of service attack
     • Use pentesting to check for weaknesses on the server
   • Active Attack
     • Use a firewall to prevent an active attack
     • When someone attacks a network with malware
   • Scareware
     • You prevent the threat of scare ware by using anti-malware
     • Somone makes your computer tell you that your computer is loaded with many viruses to scare them into following malicious links or paying for problems to be fixed
   • Spyware
     • Secretly monitors the users actions e.g the users key presses.
     • You prevent spyware using anti-malware
   • Viruses
     • Viruses attach themselves to files by copying themselves into the files. Users spread them by copying infected files and activate them by ipening the infected files
     • You prevent a virus by installing and running the latest anti-malware software
   • Passive Attack
     • When someone monitors data travelling on a network and intercepts any sensitive information they find. They use network monitering hardware and software such as packet sniffers.
     • You could use a vpn in public areas or not send anyone any sensitive information when in public
   • Worm
     • Worms are like viruses but the self-replicate without any user help, meaning they can spread very quickly. They exploit weaknesses in network security
     • Keep your ant-malware software up to date and run it on a regular basis
   • Botnet
   • Insider Attack
     • When someone within an organisation exploits their network access to steal information.
     • Only employ well trusted employees
   • Brute-Force Attack
   • Ransomware
     • Ransom-ware encrypts all the files on your computer, the user then recieves a message demanding a large sum to be paid for a decryption key
     • You would prevent ransomware by running anti-malware software on a regular basis
   • Trojan Horse
     • Malware disguised as legitimate software, unlike viruses and worms, Trojans don't replicate themselves.
     • Run anti-malware software