Network security threats : Detection and Prevention

Network security threats : Detection and Prevention

1. Spyware

   • Record the computer activity
     • like keystrokes
     • Thereby gaining access to information ; like passwords

2. Trojan horse

   • appears to be a legitimate software, to gain access to a computer
   • Without the users knowledge, the Trojan gives unauthorised backdoor access to a computer.
   • PREVENTION
     • Using Firewall, in order to control which programs can send and receive data packets
       • Therefore only authorised users and trusted programs can access the network

3. worm

   • Spread in the same way as viruses do
     • without human interaction

4. phishing

   • Resolves in usually sending emails or messages
     • they seem to come from an authentic organisation
   • They persuades users to reveal personal information, such as passwords and credit card numbers.

5. virus

   • they insert themselves into normal programs
     • they can disguise and replicate temselves in order to transfer from computer.

6. DDoS

   • allows several requests to the targeted web resources, in order to overpower the sites capacity
     • this makes it difficult for the website to work properly.
   • PREVENTION
     • Using Firewall

7. Brute force attack

   • Gaining access using a computer program
     • this is done by trying out a range of passwords combinations, until the correct password is found
   • PREVENTION
     • Using strong passwords
     • Locking accounts after a certain number of login attempts
     • Using 2 step verification

8. Social Engineering : PREVENTION

   • Creating user access levels
   • Ensuring users have strong passwords
   • Using a website filter
   • Using an effective network policy

9. Passive Attack : PREVENTION

   • Using encryption
   • Using network forensics
   • Using penetration testing

10. Malware : PREVENTION

    • Running anti-malware software regularly
    • NOT downloading software from unknown sources
    • NOT clicking on unknown links