Data levels and protection

Data levels and protection

1. Firewalls

   • Can be hardware or software
   • Firewalls work by using a set of rules that filter and reject suspicious network packets
   • Hardware firewalls usually exists by sitting between an external network and an internal connection
   • Firewalls form the first line of defence in protecting digital systems from external threats
   • A digital system such as a desktop computer can also host it's own firewall service

2. Anti-virus software

   • Anti-virus software monitors a digital system, attempting to identify and remove malicious software through the unique digital.
   • They can stop files that contain viruses
   • Some anti-virus software is free to download
   • It can use up a lot of memory