|  |  | As Internet traffic increases, so do threats from network intruders. Computer Security Institute: 64% of companies polled reported security breaches. FBI report, 1998: industrial espionage increased from 6% to 36% over one year. Increased network security is vital. Over half of network intrusion attempts are from inside sources. About 70% of all systems and data damage are caused by accidental and intentional actions by insiders. Following appropriate security policies could prevent much of the damage.