Working definitions of the cybersecurity,
risk management, and security operations
terms used throughout this guide.
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SOC (Security Operations Center)
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The team responsible for monitoring,
investigating, and responding to
security events.
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SIEM (Security Information and Event Management)
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Software that collects and analyzes logs
and security events across systems.
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SOAR (Security Orchestration, Automation, and Response)
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Tools used to coordinate and automate
parts of security operations and response.
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EDR / XDR
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Endpoint Detection and Response / Extended
Detection and Response, technologies used to
detect and respond to suspicious activity
across endpoints or broader telemetry sources.
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CTEM (Continuous Threat Exposure Management)
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An ongoing approach to identifying, assessing,
prioritizing, and addressing exposure.
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Attack Path
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A sequence of weaknesses or access
relationships that could allow an
attacker to reach a valuable target.
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IOC (Indicator of Compromise)
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Evidence such as a suspicious hash,
IP address, or domain associated with
malicious activity.
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MITRE ATT&CK
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A knowledge base of adversary tactics
and techniques used to describe attack behavior.
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CVE / CVSS
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Common Vulnerabilities and Exposures identifiers /
Common Vulnerability Scoring System,
used to identify and assess known vulnerabilities.
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KEV (Known Exploited Vulnerabilities)
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CISA's catalog of vulnerabilities known
to have been exploited in the wild.
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EPSS (Exploit Prediction Scoring System)
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A model estimating the likelihood that
a published vulnerability will be exploited
in the wild within a defined period.
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RBAC (Role-Based Access Control)
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Permissions assigned through roles rather
than only individual grants.
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MSSP (Managed Security Service Provider)
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A provider that monitors or manages
security for multiple customers.
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MTTD / MTTR
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Mean Time to Detect / Mean Time to Respond
or Remediate, depending on the organization's
defined measurement. Specify the meaning
whenever using MTTR.