About Me
CompTIA Security+
1 Threats, Attacks, and Vulnerabilities
1-1 Types of Threats
1-2 Types of Attacks
1-3 Vulnerabilities
1-4 Threat Actors and Motives
1-5 Threat Intelligence
1-6 Incident Response
1-7 Penetration Testing
1-8 Vulnerability Scanning
1-9 Threat Modeling
1-10 Security Controls
2 Technologies and Tools
2-1 Firewalls
2-2 Intrusion Detection Systems (IDS)
2-3 Intrusion Prevention Systems (IPS)
2-4 Security Information and Event Management (SIEM)
2-5 Data Loss Prevention (DLP)
2-6 Security Orchestration, Automation, and Response (SOAR)
2-7 Endpoint Security
2-8 Network Security
2-9 Cloud Security
2-10 Mobile Device Security
2-11 Secure Coding Practices
2-12 Cryptography
2-13 Public Key Infrastructure (PKI)
2-14 Certificate Management
2-15 Security Tools and Utilities
3 Architecture and Design
3-1 Security Models
3-2 Security Controls
3-3 Secure Network Design
3-4 Secure Systems Design
3-5 Secure Application Design
3-6 Secure Cloud Architecture
3-7 Secure Mobile Architecture
3-8 Secure IoT Architecture
3-9 Secure Data Storage
3-10 Secure Backup and Recovery
3-11 Security in DevOps
3-12 Security in Agile Development
3-13 Security in Continuous IntegrationContinuous Deployment (CICD)
3-14 Security in Configuration Management
3-15 Security in Identity and Access Management (IAM)
4 Identity and Access Management
4-1 Authentication Methods
4-2 Authorization Mechanisms
4-3 Identity and Access Management (IAM) Concepts
4-4 Single Sign-On (SSO)
4-5 Multi-Factor Authentication (MFA)
4-6 Federation
4-7 Role-Based Access Control (RBAC)
4-8 Attribute-Based Access Control (ABAC)
4-9 Identity as a Service (IDaaS)
4-10 Identity Lifecycle Management
4-11 Access Reviews and Audits
4-12 Privileged Access Management (PAM)
4-13 Identity Federation
4-14 Identity Provisioning and Deprovisioning
5 Risk Management
5-1 Risk Management Concepts
5-2 Risk Assessment
5-3 Risk Mitigation Strategies
5-4 Business Impact Analysis (BIA)
5-5 Risk Register
5-6 Risk Treatment
5-7 Risk Monitoring and Reporting
5-8 Risk Appetite and Tolerance
5-9 Risk Communication
5-10 Risk Transfer
5-11 Risk Acceptance
5-12 Risk Avoidance
5-13 Risk Reduction
5-14 Risk in Cloud Environments
5-15 Risk in Mobile Environments
5-16 Risk in IoT Environments
6 Cryptography and PKI
6-1 Cryptographic Concepts
6-2 Symmetric Encryption
6-3 Asymmetric Encryption
6-4 Hashing
6-5 Digital Signatures
6-6 Public Key Infrastructure (PKI)
6-7 Certificate Management
6-8 Certificate Authorities (CAs)
6-9 Certificate Revocation
6-10 Key Management
6-11 Cryptographic Protocols
6-12 Cryptographic Attacks
6-13 Quantum Cryptography
6-14 Post-Quantum Cryptography
6-15 Cryptographic Use Cases
7 Security Operations
7-1 Security Operations Concepts
7-2 Security Policies and Procedures
7-3 Security Awareness and Training
7-4 Security Monitoring and Logging
7-5 Incident Response
7-6 Forensics
7-7 Disaster Recovery
7-8 Business Continuity
7-9 Physical Security
7-10 Personnel Security
7-11 Supply Chain Security
7-12 Third-Party Risk Management
7-13 Security Audits and Assessments
7-14 Compliance and Regulatory Requirements
7-15 Security Metrics and Reporting
7-16 Security Operations Center (SOC)
7-17 Security Orchestration, Automation, and Response (SOAR)
7-18 Security in DevOps
7-19 Security in Agile Development
7-20 Security in Continuous IntegrationContinuous Deployment (CICD)
7.7 Disaster Recovery Explained

7.7 Disaster Recovery Explained

Key Concepts

Disaster Recovery involves the processes, tools, and techniques used to restore IT infrastructure and operations after a disruptive event. Key concepts include Disaster Recovery Plans (DRPs), Backup Strategies, Data Replication, Business Continuity Planning (BCP), and Recovery Time Objective (RTO) and Recovery Point Objective (RPO).

Disaster Recovery Plans (DRPs)

A Disaster Recovery Plan (DRP) is a documented, structured approach with instructions for responding to unplanned incidents. It outlines the procedures to restore critical business functions and IT systems after a disaster.

Example: A financial institution creates a DRP that includes steps for data backup, system restoration, and communication protocols. In the event of a flood, the DRP guides the team to activate the backup site, restore data from the latest backup, and notify customers about the situation.

Backup Strategies

Backup Strategies involve creating copies of data and systems to restore them in case of data loss or corruption. Common strategies include full backups, incremental backups, and differential backups.

Example: A company uses a combination of full and incremental backups. On Sunday, a full backup of all data is taken. On subsequent days, only the data that has changed since the last backup is saved. This ensures that the company can restore data efficiently while minimizing storage requirements.

Data Replication

Data Replication involves copying data from a primary location to one or more secondary locations in real-time or near-real-time. This ensures that data is available at multiple sites, reducing the risk of data loss.

Example: An e-commerce platform replicates its database to a secondary data center located in a different geographical region. If the primary data center experiences a power outage, the secondary data center can take over, ensuring uninterrupted service to customers.

Business Continuity Planning (BCP)

Business Continuity Planning (BCP) focuses on maintaining business operations during and after a disaster. It includes strategies for maintaining critical functions, such as communication, supply chain management, and customer service.

Example: A manufacturing company develops a BCP that includes alternate communication methods, supplier agreements, and customer support protocols. In the event of a natural disaster, the company can continue operations by using alternative communication channels and maintaining supply chain relationships.

Recovery Time Objective (RTO) and Recovery Point Objective (RPO)

Recovery Time Objective (RTO) is the maximum acceptable time to restore a system after a disruption. Recovery Point Objective (RPO) is the maximum acceptable amount of data loss measured in time.

Example: A hospital sets an RTO of 2 hours and an RPO of 15 minutes for its patient records system. This means that the hospital aims to restore the system within 2 hours and can tolerate losing data from the last 15 minutes. By aligning these objectives with business needs, the hospital ensures minimal disruption to patient care.

Conclusion

Disaster Recovery is essential for ensuring business resilience and continuity. By understanding and implementing Disaster Recovery Plans (DRPs), Backup Strategies, Data Replication, Business Continuity Planning (BCP), and aligning Recovery Time Objective (RTO) and Recovery Point Objective (RPO) with business needs, organizations can protect their operations and recover quickly from disruptive events.

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