8- 4 What are the most important tools and technologies for safeguarding information resources?

• Describe the nature of a token in the context of authentication.

• Describe how two-factor identification can help to reduce fraud, hacking, and security breaches.
• Explain how an intrusion detection system works.
• Explain why an organization might choose to use a unified threat management system.
• Explain how a digital certificate works and why it might give a site visitor a greater sense of security.
• Explain why small businesses in particular might opt to use managed security service providers.
• Explain how employing software metrics can improve system quality and reliability.