All terms
Glossary · Cyber

Threat Actor

An individual, group, or organization with the capability and intent to exploit vulnerabilities and cause harm to information systems or assets.

Full definition
Threat actors range from nation-states and organized cybercrime groups to hacktivists, insiders, and opportunistic individuals, each with distinct motivations, capabilities, and targets. Understanding threat actors helps organizations prioritize security controls and allocate resources effectively. For example, a defense contractor faces sophisticated nation-state actors seeking intellectual property, requiring advanced persistent threat defenses, while a retailer primarily faces financially-motivated cybercriminals targeting payment data. Threat intelligence services profile actor tactics, techniques, and procedures to inform risk assessments, incident response, and security architecture decisions.
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