Business Continuity and Disaster Recovery: Keeping the Organization Running

 Business Continuity and Disaster Recovery: Keeping the Organization Running

By: Heather Lange-Wilson

Cybersecurity is not only about preventing unauthorized access.

It is also about making sure critical services remain available when something goes wrong.

A ransomware attack, equipment failure, power outage, natural disaster, network outage, or human mistake can interrupt operations.

Organizations therefore need plans for continuing essential operations and recovering technology.

Business Continuity

Business Continuity Planning (BCP) focuses on maintaining essential business operations during a disruption.

The central question is:

How do we continue operating?

This may involve:

• Alternate work locations
• Manual procedures
• Backup communications
• Redundant systems
• Emergency staffing plans
• Prioritization of critical services

Disaster Recovery

Disaster Recovery (DR) focuses more specifically on restoring technology and systems following a disruption.

The question becomes:

How do we restore our systems and data?

Business continuity and disaster recovery work together but are not identical.

Business Impact Analysis

A Business Impact Analysis (BIA) helps identify critical business functions and the consequences of disruption.

Organizations may evaluate:

• Critical processes
• Dependencies
• Financial impact
• Operational impact
• Maximum acceptable downtime
• Required resources

The results help prioritize recovery.

Recovery Time Objective

Recovery Time Objective (RTO) describes the targeted amount of time within which a system or process should be restored after a disruption.

If a system has an RTO of four hours, the recovery strategy should be designed around restoring the service within that target.

Recovery Point Objective

Recovery Point Objective (RPO) addresses acceptable data loss measured in time.

If an organization has an RPO of one hour, its backup and recovery strategy should generally support recovering data to a point no more than approximately one hour before the disruption.

An easy way to remember:

RTO = Time to restore

RPO = How much recent data can be lost

Backups

Backups are essential, but simply having a backup is not enough.

Organizations should consider:

• Backup frequency
• Storage location
• Access controls
• Encryption
• Offline or isolated copies
• Restoration testing

A backup that cannot be successfully restored provides little protection.

Redundancy

Redundancy reduces dependence on a single component.

Organizations may implement redundant:

• Internet connections
• Power supplies
• Servers
• Storage
• Network devices
• Data centers

Redundancy improves resilience but does not replace planning.

Exercises and Testing

Plans should be tested before an emergency.

Organizations may use:

Tabletop exercises -  Participants discuss how they would respond to a scenario.

Simulation exercises -  Participants practice aspects of an emergency response.

Technical recovery tests -  Systems or backups are restored to verify recovery capabilities.

Testing often identifies assumptions or missing information that would otherwise remain undiscovered until a real emergency.

Employee Responsibilities

Employees should know:

• How emergency communications will occur
• Where to report during a disruption
• How to access approved alternate systems
• Which manual procedures may be required
• Who to contact for assistance

Employees should avoid creating their own unauthorized workarounds during an outage.

Security requirements still matter during emergencies.

Knowledge Check

1. What does BCP primarily focus on?

A. Maintaining essential operations
B. Password creation
C. Software licensing
D. Phishing simulation

Answer: A

2. What does RTO measure?

A. Targeted time for restoring a service
B. Password age
C. Number of backups
D. Data classification

Answer: A

3. What does RPO help define?

A. Acceptable data loss measured in time
B. Number of administrators
C. Firewall rules
D. Audit frequency

Answer: A

4. Why should backups be tested?

A. To verify they can actually be restored
B. To make files larger
C. To avoid encryption
D. To eliminate continuity planning

Answer: A

Security+ Quick Review

BCP = Keep critical operations functioning

DR = Restore technology and systems

BIA = Determines impact and identifies critical functions

RTO = Target restoration time

RPO = Acceptable data loss measured in time

Tabletop Exercise = Discussion-based practice of a scenario

Final Takeaway

Resilience is not simply having backups.

Organizations need to understand what is critical, how quickly it must return, how much data loss is acceptable, and what employees should do while recovery is underway.