{"id":15569,"date":"2026-05-16T05:35:00","date_gmt":"2026-05-16T09:35:00","guid":{"rendered":"https:\/\/www.netwitness.com\/?post_type=glossary&p=15569"},"modified":"2026-05-22T03:34:21","modified_gmt":"2026-05-22T07:34:21","slug":"operational-security-opsec","status":"publish","type":"glossary","link":"https:\/\/www.netwitness.com\/ja\/cyber-glossary\/operational-security\/","title":{"rendered":"Operational Security (OPSEC)"},"content":{"rendered":"\t\t
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What is Operational Security (OPSEC)?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Operational security, also known as OPSEC or operations security (OPSEC), is a cybersecurity and risk management practice used to\u00a0identify, protect, and control sensitive information that attackers could use to plan or execute a cyberattack. OPSEC security helps organizations look at their systems, processes, people, and exposed operational details from an attacker\u2019s perspective so they can reduce operational security risks before they become security incidents.\u00a0<\/span>\u00a0<\/span><\/p>

Operational security is not limited to protecting confidential data. It also protects the context around that data, such as system architecture, access patterns, technology dependencies, workflows, cloud naming conventions, security capabilities, and incident response processes. This makes OPSEC an important part of cybersecurity, information security, security operations, and broader risk management programs.<\/span><\/p>

Operational security is the practice of\u00a0identifying\u00a0critical information, analyzing threats and vulnerabilities, assessing risks, and applying countermeasures to protect sensitive data and operational details. In cybersecurity, OPSEC helps organizations understand what they may be unintentionally revealing through employee behavior, public documentation, job postings, cloud environments, social media, exposed metadata, email patterns, and internal workflows.\u00a0<\/span>\u00a0<\/span><\/p>

A strong operational security strategy helps prevent attackers from collecting intelligence that can be used for phishing, social engineering, lateral movement, privilege escalation, supply chain attacks, and evasion of threat detection tools. OPSEC does not replace endpoint protection, identity controls, firewalls, monitoring systems, or incident response programs. Instead, it strengthens those security controls by limiting the intelligence attackers can gather to bypass them.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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