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An incident response plan (IRP) is a group of policies that dictate an organization’s reaction to a cyber-attack. Once a breach of security is identified the IRP is initiated in response.
Wikipedia
Information security, sometimes shortened to InfoSec, is the practice of protecting information by mitigating information risks. It is part of information risk management. It typically involves preventing or reducing the probability of unauthorized or inappropriate access to data or the unlawful use, disclosure, disruption, deletion, corruption, modification, inspection, recording, or devaluation of information. It also involves actions intended to reduce the adverse impacts of such incidents. Protected information may take any form, e.g., electronic or physical, tangible (e.g., paperwork), or intangible (e.g., knowledge). Information security's primary focus is the balanced protection of data confidentiality, integrity, and availability (also known as the "CIA" triad) while maintaining a focus on efficient policy implementation, all without hampering organization productivity. This is largely achieved through a structured risk management process that involves:
Identifying information and related assets, plus potential threats, vulnerabilities, and impacts;
Evaluating the risks
Deciding how to address or treat the risks, i.e., to avoid, mitigate, share, or accept them
Where risk mitigation is required, selecting or designing appropriate security controls and implementing them
Monitoring the activities and making adjustments as necessary to address any issues, changes, or improvement opportunities
To standardize this discipline, academics and professionals collaborate to offer guidance, policies, and industry standards on passwords, antivirus software, firewalls, encryption software, legal liability, security awareness and training, and so forth. This standardization may be further driven by a wide variety of laws and regulations that affect how data is accessed, processed, stored, transferred, and destroyed. However, the implementation of any standards and guidance within an entity
Information_security#Incident_response_plans - Wikipedia, the free encyclopedia