Cybersecurity - Control Functions

Security controls are countermeasures or safeguards used to reduce the chances that a threat will exploit a vulnerability.

In IT, controls are categorized into three main functions: preventive, detective, and corrective. Each serves a distinct purpose in protecting information systems.

1. Preventive Controls

These controls are designed to stop security incidents before they occur. They aim to reduce vulnerabilities and deter potential threats. Examples include:

--> Access Controls: User authentication and authorization measures.
--> Firewalls: Blocking unauthorized access to networks.
--> Encryption: Protecting data confidentiality.
--> Security Policies: Establishing guidelines for user behavior and security protocols.

2. Detective Controls

These controls focus on identifying and responding to security incidents as they happen or shortly after. They help in monitoring and recognizing threats. Examples include:

--> Intrusion Detection Systems (IDS): Monitoring network traffic for suspicious activity.
--> Log Analysis: Reviewing system logs for anomalies or unauthorized actions.
--> Security Information and Event Management (SIEM): Aggregating and analyzing security data from various sources.

3. Corrective Controls

These controls are implemented after a security incident has occurred to restore systems and processes to normal operation. They aim to minimize damage and prevent recurrence. Examples include:

--> Incident Response Plans: Procedures to address and manage security breaches.
--> Backup Systems: Restoring lost or compromised data from backups.
--> Patching Vulnerabilities: Updating software to fix security flaws post-incident.

Summary:
--> Preventive controls aim to avert security issues.
--> Detective controls focus on identifying incidents in real-time.
--> Corrective controls are for responding to and recovering from incidents.

A robust cybersecurity strategy typically incorporates all three functions of controls to effectively safeguard against threats.

Please refer to the below URL for more details:
https://purplesec.us/learn/security-controls/

Happy Learning !!
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