Data level protection 1

• Firewalls block suspicious files
• Physical firewalls are generally connected to what?

  The modem
• Cons

  Firewalls can be too intrusive and restrictive, slowing employees work

  Software firewalls take up resources and decrease computer & network performance.

  Hardware firewalls can increase network bandwidth
• What is an advantage of firewalls over anti-virus?


  Firewalls can prevent malware from ever being downloaded
• Obscuring data entry - which is replacing data (such as password), with a * or • to stop shoulder surfing and similar threats
• 'Stay logged in' - similar to autocomplete but as it is stored inside computer it can be stolen
• What does an anti-virus generally do when it finds malware?


  Isolate it
• What does signature detection do?


  Looks for malware signatures
• The main positive of security conscious interface design is it can reduce the need for overly tight security measures
• The main negative of security conscious design is that focusing on security may worsen ease of use & general accessibility
• Firewalls work by monitoring incoming and outgoing network traffic and blocking suspicious data based on a set of security rules (whitelist/ blacklist)
• What is the way firewalls work called?


  Packet filtering
• Pros of software firewall

  Prevents all forms of malware from ever infecting your computer system.

  Usually reasonably affordable and relatively simple to set up.
• Does the WAN connect directly to the LAN or the hardware firewall?


  Firewall
• there are are two types of firewall?hardware and software
• What two types of detection do anti-viruses use?

  Heuristic and Signature
• Autocomplete - Effective against internal threats like shoulder surfing and key logging but generally opens up more external threats
• What does heuristic detection do?


  Monitors the behaviour of processes on your computer to spot malware-like behaviour