Week 11: Networking and Computer Security

Network and Computer Security

Consist of the provisions and policies adopted by a network administrator to prevent and monitor unauthorised access, misuse, modification or denial of a computer network and network accessible resources.

Network Security: Certificates

Client Security Issues

Phishing

•  Attacks are performed with the intention to acquire personal information like credit card numbers, bank account, etc.
• The recipients are encouraged to enter personal identification data.

Web Spoofing

• Mocking the web presences of trusted corporations with the intention to trick customers.
•  Use convincing websites, email designs and URLs

Desktop Security Issues

Adware

• Programs used to deliver advertising contents.
• Visible to the user, experienced to be annoying.

Spyware

• Intends to remain unrecognised.
• Used to gather personal info like login details, etc
• Spyware monitors the user's activities and scan the system.

Viruses

• Attached to executable files or documents 
• Spread through sharing of infected files or sending emails with viruses contained in the attachment
• Some can cause further damage to the systems

Worm

• Programs that can replicate or copy themselves.

Trojan Horses

• Do not replicate themselves but typically cause damage or compromise of security of infected computers
• Appears to be useful software and often offer the pretended useful functionality
• Damage caused varies – include data theft and destruction or illegitimate access