Trend Companion is an AI-powered cybersecurity assistant integrated into the Trend Vision One platform. The tool uses multiple fine-tuned models, retrieval augmented generation (RAG), and components within Trend Cybertron to assist security teams with investigation, analysis, and response activities. The assistant provides real-time help through natural language interaction, allowing analysts to interact with security data and alerts using conversational queries. It summarizes and explains Workbench alerts, reducing the time needed to understand security events. The tool creates search queries from simple language prompts and decodes command-line instructions and potentially malicious scripts. Trend Companion summarizes investigation reports and case notes, assists with adding responses to cases and alerts, and selects appropriate search methods for queries. It helps build and execute advanced threat-hunting queries and assists incident responders with OSQuery queries in the IR and Forensics module. The system incorporates threat intelligence from Trend Micro's global sensor network, which includes data from millions of sensors and trillions of threat queries from 500,000+ customers. It leverages insights from 500+ threat researchers and the Zero Day Initiative bug bounty program. Privacy safeguards are implemented to remove personal information from prompts before processing. Conversation records are retained for up to 30 days, with a limit of 500 prompts. Customer data is not used to train the models. The tool uses both third-party and proprietary AI technologies in its architecture.