What is the diff between a vulnerability, a threat and a risk ? what are the three principles of information security ? what is the diff between ID's and IPs what is phishing , and how can it be prevented? How do you secure a firewall ?

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Understanding key concepts in network security: vulnerabilities, threats, risks, and principles of information security.

Vulnerability: A weakness in a system (e.g., outdated software).
Threat: A potential cause of an unwanted incident (e.g., malware).
Risk: The potential for loss or damage when a threat exploits a vulnerability.
Three principles of information security: Confidentiality, Integrity, Availability.
IDs (Intrusion Detection Systems) monitor and analyze traffic; IPs (Intrusion Prevention Systems) actively block threats.
Phishing: A fraudulent attempt to obtain sensitive information via deceptive emails or websites.
Preventing phishing: Use email filters, educate users, and implement multi-factor authentication.
Securing a firewall: Regularly update rules, monitor traffic, and conduct vulnerability assessments.

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What is the diff between a vulnerability, a threat and a risk ? what are the three principles of information security ? what is the diff between ID's and IPs what is phishing , and how can it be prevented? How do you secure a firewall ?

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