--- title: "Security Monitoring glossary" slug: "securitymonitoring-glossary" tags: ["Security Monitoring"] updated: 2026-09-17T09:19:49Z published: 2026-09-17T09:19:49Z canonical: "guide.ncloud-docs.com/securitymonitoring-glossary" stale: true --- > ## Documentation Index > Fetch the complete documentation index at: https://guide.ncloud-docs.com/llms.txt > Use this file to discover all available pages before exploring further. # Security Monitoring glossary Available in Classic and VPC You must become familiar with a few terms to use Security Monitoring. The glossary and its description are as follows. ### Anti-DDoS This is an abbreviation for Anti-Distributed Denial of Service. It is a DDoS attack defense service that helps realize stable operation of the user's service by detecting and blocking DDoS attacks. ### DDoS This is an abbreviation for Distributed Denial of Service. Refers to attacks that deplete resources to prevent the user's service from being operated normally. ### V1 An abbreviation that refers to the Classic environment ### V2 An abbreviation that refers to the VPC environment ### Security event A unit for the result of performing detections and actions in Security Monitoring. Generally used as a synonym of event. ### Anti-virus An anti-virus service that supports the stable operation of the service by detecting, isolating, and deleting malware on servers operated by the user in real time ### WAF (Web Application Firewall) A web firewall service that detects and blocks attacking traffic by monitoring web-based (HTTP/HTTPS) traffic ### Event A unit for the result of performing detections and actions in Security Monitoring. Generally used as a synonym of security event. ### IPS (Intrusion Prevention System) A service that detects and blocks malicious attacks (intrusions) attempted against the user's service. ### IDS (Intrusion Detection System) An intrusion detection service that detects malicious attacks (intrusions) attempted against the user's service open to the outside Note To see a full list of terms and definitions, go to [Glossary](https://www.ncloud.com/guideCenter/glossary) from the NAVER Cloud Platform portal.