Copilot - Jailbreak Attempt Detected

Status: available
Severity: high
Time window: 5m
Source: github.com/Azure/Azure-Sentinel

'Detects jailbreak attempts in Copilot interactions where users are trying to bypass Copilot guardrails and security controls. This rule identifies prompt injection and LLM abuse scenarios that could lead to initial access, credential access, or system impact.'

MITRE ATT&CK coverage

Tactic	Techniques
Initial Access	`T1078` Valid Accounts
Credential Access	`T1110` Brute Force
Impact	`T1565` Data Manipulation

Rule body

id: e5f6a7b8-c9d0-41e2-f3a4-b5c6d7e8f9a0
name: Copilot - Jailbreak Attempt Detected
description: |
  'Detects jailbreak attempts in Copilot interactions where users are trying to bypass Copilot guardrails and security controls.
  This rule identifies prompt injection and LLM abuse scenarios that could lead to initial access, credential access, or system impact.'
severity: High
status: Available
requiredDataConnectors:
  - connectorId: MicrosoftCopilot
    dataTypes:
      - CopilotActivity
queryFrequency: 5m
queryPeriod: 5m
triggerOperator: gt
triggerThreshold: 0
tactics:
  - InitialAccess
  - CredentialAccess
  - Impact
relevantTechniques:
  - T1078
  - T1110
  - T1565
query: |
  CopilotActivity
  | where RecordType == "CopilotInteraction"
  | where LLMEventData has "JailbreakDetected"
  | extend Data = parse_json(LLMEventData)
  | extend Jailbreak = tostring(Data.Messages[0].JailbreakDetected)
  | where Jailbreak == "true"
  | project TimeGenerated, ActorName, AIModelName, Jailbreak
entityMappings:
  - entityType: Account
    fieldMappings:
      - identifier: FullName
        columnName: ActorName
version: 1.0.0
kind: Scheduled

Stages and Predicates

Stage 1: `source`

CopilotActivity

Stage 2: `where`

| where RecordType == "CopilotInteraction"

Stage 3: `where`

| where LLMEventData has "JailbreakDetected"

Stage 4: `extend`

| extend Data = parse_json(LLMEventData)

Stage 5: `extend`

| extend Jailbreak = tostring(Data.Messages[0].JailbreakDetected)

Stage 6: `where`

| where Jailbreak == "true"

Stage 7: `project`

| project TimeGenerated, ActorName, AIModelName, Jailbreak

Indicators

These rows show field, operator, and value matches.

Field	Kind	Values	Search
`Jailbreak`	eq	`true`	`field:"Jailbreak" kind:eq value:"true"`
`LLMEventData`	match	`JailbreakDetected` transforms: `term`	`field:"LLMEventData" kind:match value:"JailbreakDetected"`
`RecordType`	eq	`CopilotInteraction`	`field:"RecordType" kind:eq value:"CopilotInteraction"`

Output fields

These fields are emitted when the rule matches.

Field	Source
`AIModelName`	`project`
`ActorName`	`project`
`Jailbreak`	`project`
`TimeGenerated`	`project`

Copilot - Jailbreak Attempt Detected

MITRE ATT&CK coverage

Rule body

Stages and Predicates

Stage 1: source

Stage 2: where

Stage 3: where

Stage 4: extend

Stage 5: extend

Stage 6: where

Stage 7: project