Network security & System software

• What is Malware?

  Software that aims to harm computers and/or data
• What is Phishing?

  Emails that pretend to be from legitimate companies but actually try to gain personal information
• What is Social engineering?

  Deception to gain personal information?
• What are Brute force attacks?

  Trying all possible passwords until the correct one is found.
• What are Denial of service attacks?

  Flooding a server or network with pointless requests so that it fails or slows down.
• What is Data Interception and theft?

  -**Stealing data** or **intercepting it**

  -With a **man-in-the-middle attack.**
• What is SQL injection?

  Using web forms to add SQL instructions to a query that cause data loss or the revealing of personal information.
• Name 6 methods of physical security.

  CCTV

  Intruder alarms

  Locks on doors or cabinets

  Fences, walls, barbed wire

  Security guards

  ID cards and signs
• Name 6 features of a firewall.

  -**Prevents attackers from gaining access** to computers on a network.

  
  

  -Can **block certain malicious computers** by filtering packets from a **certain IP address.**

  
  

  -Can **prevent access to certain ports** on the network.

  
  

  -Malicious or inappropriate websites can be blocked.

  
  

  -Dedicated hardware firewalls are **expensive,**

  
  

  -Software firewalls will **slow down a computer,**
• What is the User interface in an OS?

  A method of the user interacting with the computer – windows, icons, menus, pointers, drag/drop – can be GUI, menu interface or command line interface.
• What is Memory management in an OS?

  Manages programs and data stored in RAM, frees up memory when a program is closed.
• What is Multitasking in an OS?

  Running two or more programs at once.
• What is Peripheral management and drivers in an OS?

  The management of devices such as mice and printers.
• What is User management in an OS?

  Management of usernames and passwords along with what they have permission to access.
• What is File management in an OS?

  The organisation of files on storage drives.
• Name the 5 inclusions of Utility software.

  Encryption software

  Defragmentation software

  Data compression

  Disk management (clean-up, formatters)

  anti-virus software.