6e - Viruses

6e - Viruses

1. Virus Protection

   • Scan storage devices for infected files
     • Detects viruses
     • Allows removal of infected code from file
     • Deletion of infected files
   • Install firewall on network
   • Prevent use of removable storage media
   • Regularly update virus data files

2. Audit Logs

   • Consist of data about each stage of any transaction
   • Maintained automatically by the system
   • Allow the network manager to examine patterns of use
   • Audit logs track:
     • Who did what
     • At which workstation
     • When it occured
   • Logs can be used to see which member of staff:
     • Accessed particular files
     • Other resources
     • Web pages

3. Firewall

   • Network security device
     • Examines data packets moving into and out of the system
   • Configured to permit or deny connections
     • Using a set of rules
     • Access is denied if not allowed by the rules
     • Checks data sent by users
   • Why use a firewall?
     • Prevents external users from gaining unauthorised access to a computer system
     • To protect data from being viewed/altered/deleted
     • To stop hackers/viruses from entering the system
     • To comply with the DPA

4. Physical Security

   • Lock the computer up
   • Entry measure to get into building
   • Disconnect or remove floppy/CD/DVD drives
   • Disconnect USB ports