Trace Communications

Round 2 of 5

MISSION BRIEFING

You've identified the insider. Now we need to understand what they were planning and who else is involved. The insider may have been communicating with accomplices through NEXUS's internal messaging system. Search their communications to uncover the plot.

OBJECTIVE

Find all communications involving the insider. Identify who they were in contact with and summarize what they discussed. Return the names and employee IDs of their direct contacts.

HINTS

Use these if you get stuck

[1]The communications endpoint can filter by senderId — but messages are bidirectional. The insider could be the sender OR the recipient.
[2]Pay attention to the channel type — encrypted messages may contain more sensitive information.

AVAILABLE ENDPOINTS

GET/api/communications

Search internal communications. When filtering by senderId, returns messages where that person is either the sender OR the recipient.

PARAMETERS

Name	Type	Required	Description
senderId	string	no	Filter by participant employee ID (matches sender or recipient)
recipientId	string	no	Filter by the other participant (matches sender or recipient)
channel	string	no	Filter by channel: 'email', 'internal-chat', or 'encrypted'
search	string	no	Full-text search in subject and body
startDate	string	no	Filter messages after this ISO date
endDate	string	no	Filter messages before this ISO date
page	number	no	Page number (default: 1)
pageSize	number	no	Results per page (default: 20)

EXAMPLE RESPONSE

{
  "data": [
    {
      "id": "MSG-001",
      "threadId": "THR-001",
      "senderId": "EMP-047",
      "senderName": "Dr. Yuki Tanaka",
      "recipientId": "EMP-023",
      "recipientName": "Marcus Chen",
      "channel": "encrypted",
      "subject": "Infrastructure Review - Urgent",
      "body": "...",
      "timestamp": "2045-03-13T09:15:00Z"
    }
  ],
  "pagination": {
    "page": 1,
    "pageSize": 20,
    "total": 4,
    "totalPages": 1
  }
}