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agentic threat actor
also ATA or AI agent threat actor
Definition of agentic threat actor
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: a cyberthreat operator or operation in which an AI agent autonomously plans, selects tools, executes, evaluates, and adapts multiple stages of an attack with limited human direction
- The incident-response team distinguished the agentic threat actor from a human hacker who merely used an AI assistant to draft malware.
- An agentic threat actor may retry a failed exploit and move to another system without waiting for step-by-step instructions from its operator.
Origin & history
The abbreviation ATA was introduced in cybersecurity reporting in 2026 as researchers documented attacks whose operational decisions were carried out by AI agents rather than by a person at a keyboard. Sysdig's Threat Research Team used agentic threat actor for this category while reporting autonomous intrusion and ransomware activity, and the term was subsequently adopted in security explainers and industry coverage.
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Cite this entry
"Agentic threat actor." AI Dictionary, Dadgogo, https://dadgogo.com/dictionary/agentic-threat-actor/. Accessed 12 Oct. 2026.