/check-duplicates

type: Skill
name: check-duplicates
description: "Check for duplicate or similar cases. Use before deep analysis to avoid investigating the same incident twice. Takes a CASE_ID and returns list of similar cases."
required_roles:
  soar: roles/chronicle.editor
personas: [tier1-analyst, tier2-analyst, tier3-analyst]
generated:
  by: human:dandye
  at: 2026-02-04T06:10:49-05:00

Check Duplicates Skill

Identify potentially duplicate or similar existing cases before starting deep analysis.

Inputs

• `CASE_ID` - The ID of the current case to check
• `ALERT_GROUP_IDENTIFIERS` - Alert group identifiers for the case
• *(Optional)* `DAYS_BACK` - How many days to search back (default: 7)
• *(Optional)* `INCLUDE_OPEN` - Include open cases (default: true)
• *(Optional)* `INCLUDE_CLOSED` - Include closed cases (default: false)

Workflow

Step 1: Execute Similarity Check

secops-soar.siemplify_get_similar_cases(
    case_id=CASE_ID,
    alert_group_identifiers=ALERT_GROUP_IDENTIFIERS,
    days_back=DAYS_BACK,
    include_open_cases=INCLUDE_OPEN,
    include_closed_cases=INCLUDE_CLOSED
)

Step 2: Process Results

Extract the list of similar case IDs from the response.

Outputs

| Output | Description | |--------|-------------| | `SIMILAR_CASE_IDS` | List of case IDs identified as potentially similar/duplicate | | `SIMILARITY_CHECK_STATUS` | Success/failure status of the check |

Usage Pattern

1. Check duplicates BEFORE enrichment
2. If duplicates found:
   - Review similar case(s)
   - If confirmed duplicate: close as duplicate
   - If related but distinct: note correlation, continue
3. If no duplicates: proceed with analysis

When Duplicates Are Found

If `SIMILAR_CASE_IDS` is not empty:

1. Document: "Closing as duplicate of [Similar Case ID]" 2. Close with:

• Reason: `NOT_MALICIOUS`
• Root cause: `Similar case is already under investigation`