The recent edition of Cisco's IQ Magazine has introduced their new focus on small and medium businesses. One of the articles introduces some basic security concepts. This introduction highlights the three branches of security threats that Cisco uses to categories all network or information security breaches. The three branches are:
  * Unauthorized data access (i.e. snooping)
  * Data integrity breach (i.e. changing the data for any reason)
  * Denial of Service (i.e. making data unavailable)