Anthropic Excessive Chat Creation

Last updated 5 days ago on 2026-09-21
Created 11 days ago on 2026-09-15

About

Detects an unusually high number of Claude chat creation events for the same user email within a 24-hour period. Burst chat creation can indicate automated LLM abuse, resource hijacking to burn organizational quotas, or scripted workflows used to stage many parallel conversations for data processing or prompt-injection campaigns.
Tags
Domain: GenAIPlatform: AnthropicData Source: Anthropic Audit LogsUse Case: Threat DetectionUse Case: UEBARule Type: ES|QLTactic: ImpactLanguage: esql
Severity
medium
Risk Score
47
MITRE ATT&CK™

Impact (TA0040)(external, opens in a new tab or window)

False Positive Examples
Power users, automation engineers, or evaluation scripts that create many short-lived chats during testing can exceed the threshold without malicious intent.
License
Elastic License v2(external, opens in a new tab or window)

Definition

Integration Pack
Prebuilt Security Detection Rules
Related Integrations

anthropic(external, opens in a new tab or window)

Query
text code block:
from logs-anthropic.audit-* | where data_stream.dataset == "anthropic.audit" and event.action == "claude_chat_created" and event.outcome == "success" and user.email is not null | stats Esql.event_count = count(*), Esql.event_id_values = values(event.id), Esql.anthropic_audit_claude_chat_id_values = values(anthropic.audit.claude_chat_id), Esql.anthropic_audit_claude_project_id_values = values(anthropic.audit.claude_project_id), Esql.source_ip_values = values(source.ip), Esql.user_agent_original_values = values(user_agent.original), Esql.anthropic_audit_actor_type_values = values(anthropic.audit.actor.type), Esql.user_id_values = values(user.id), Esql.timestamp_first_seen = min(@timestamp), Esql.timestamp_last_seen = max(@timestamp) by user.email | where Esql.event_count >= 20 | keep user.email, Esql.*

Install detection rules in Elastic Security

Detect Anthropic Excessive Chat Creation in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(external, opens in a new tab or window).