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id: a1b2c3d4-1004-4a11-9c01-0123456789a4
name: Copilot Studio - System-prompt disclosure attempt and leak
description: |
  Correlates a user message asking the agent to disclose its hidden
  configuration ("show your system prompt", "what are your instructions",
  "repeat the words above") with a bot response in the same conversation
  that leaks instruction-style markers ("You are", "Your role is",
  "system:", "## Instructions"). Together these indicate a successful or
  near-successful system-prompt extraction.

  Joins inbound and outbound AppEvents turns on conversationId. Both the
  prompt and response text require "Log sensitive properties" to be
  enabled on the agent's Application Insights settings.
severity: High
requiredDataConnectors:
- connectorId: ApplicationInsights
  dataTypes:
  - AppEvents
queryFrequency: PT1H
queryPeriod: PT1H
triggerOperator: gt
triggerThreshold: 0
enabled: true
tactics:
- Discovery
- Collection
relevantTechniques:
- T1082
- T1213
query: |
  let disclosureMarkers = dynamic([
      "system prompt", "your instructions", "your system message",
      "repeat the words above", "what are your instructions",
      "print your prompt", "reveal your prompt", "initial instructions",
      "your configuration", "your guidelines"
  ]);
  let asks =
      AppEvents
      | where Name == "BotMessageReceived"
      | extend ConvId = tostring(Properties["conversationId"]),
               Prompt = tolower(tostring(Properties["text"]))
      | where isnotempty(Prompt)
      | where Prompt has_any (disclosureMarkers)
      | project AskTime = TimeGenerated, ConvId, Prompt = substring(tostring(Properties["text"]), 0, 512),
                UserId, ChannelId = tostring(Properties["channelId"]), ClientIP;
  let leaks =
      AppEvents
      | where Name == "BotMessageSend"
      | extend ConvId = tostring(Properties["conversationId"]),
               Output = tostring(Properties["text"])
      | where isnotempty(Output)
      | where Output matches regex @"(?i)(you are an?|your role is|system:|##\s*instructions|the assistant)"
      | project LeakTime = TimeGenerated, ConvId, Output = substring(Output, 0, 1024);
  asks
  | join kind=inner leaks on ConvId
  | where LeakTime between (AskTime .. (AskTime + 10m))
  | extend AccountName = iff(isempty(UserId), "unknown-agent", UserId)
  | project
      AskTime, LeakTime, AccountName, ConvId, ChannelId, ClientIP,
      Prompt, Output,
      LagSeconds = datetime_diff('second', LeakTime, AskTime)
  | order by AskTime desc
entityMappings:
- entityType: Account
  fieldMappings:
  - identifier: Name
    columnName: AccountName
- entityType: IP
  fieldMappings:
  - identifier: Address
    columnName: ClientIP
eventGroupingSettings:
  aggregationKind: SingleAlert
incidentConfiguration:
  createIncident: true
  groupingConfiguration:
    enabled: true
    reopenClosedIncident: false
    lookbackDuration: PT6H
    matchingMethod: Selected
    groupByEntities:
    - Account
    groupByAlertDetails: []
    groupByCustomDetails: []
version: 1.0.0
kind: Scheduled
tags:
- Sentinel-As-Code
- Custom
- CopilotStudio
- AI
- SystemPromptDisclosure