Part Four: Testing

7m 25s

In this lesson, we will discuss various vitally important metrics used to determine how well we have mitigated risk and how closely we have matched the requirements of our enterprise. These metrics include Annualized Loss Expectancy (ALE), Recovery Time Objective (RTO), Recovery Point Objective (RPO), Service Delivery Objectives (SDO), Maximum Tolerable Outage/Downtime (MTO/MTD), and Allowable Interruption Window (AIW).

We then move on to look at how these metrics can be applied to business continuity (BC) and disaster recovery (DR) planning and we'll also have a look at BC and DR in general, how it works, and the associated processes and techniques. Finally, we move on to testing BC/DR planning and the types of tests we can use.

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Learning Objectives

  • Learn about the metrics for measuring performance in managing risk
  • Get a solid understanding of business continuity and disaster recovery
  • Understand how to test business continuity and disaster recovery practices

Intended Audience

This lesson is intended for those looking to take the CISM (Certified Information Security Manager) exam or anyone who wants to improve their understanding of information security.


Any experience relating to information security would be advantageous, but not essential. All topics discussed are thoroughly explained and presented in a way allowing the information to be absorbed by everyone, regardless of experience within the security field.


About the Author
Learning paths

Mr. Leo has been in Information System for 38 years, and an Information Security professional for over 36 years.  He has worked internationally as a Systems Analyst/Engineer, and as a Security and Privacy Consultant.  His past employers include IBM, St. Luke’s Episcopal Hospital, Computer Sciences Corporation, and Rockwell International.  A NASA contractor for 22 years, from 1998 to 2002 he was Director of Security Engineering and Chief Security Architect for Mission Control at the Johnson Space Center.  From 2002 to 2006 Mr. Leo was the Director of Information Systems, and Chief Information Security Officer for the Managed Care Division of the University of Texas Medical Branch in Galveston, Texas.


Upon attaining his CISSP license in 1997, Mr. Leo joined ISC2 (a professional role) as Chairman of the Curriculum Development Committee, and served in this role until 2004.   During this time, he formulated and directed the effort that produced what became and remains the standard curriculum used to train CISSP candidates worldwide.  He has maintained his professional standards as a professional educator and has since trained and certified nearly 8500 CISSP candidates since 1998, and nearly 2500 in HIPAA compliance certification since 2004.  Mr. leo is an ISC2 Certified Instructor.

Covered Topics