Mitsubishi Electric has finalized its acquisition of Nozomi Networks.

The Japanese giant's purchase of the operational technology (OT) vendor was announced last September with no financial details disclosed, though analyst reports placed the deal around the $880 million mark.

With the completion, Nozomi – whose name translates as hope or desire in Japanese – will serve as a wholly owned subsidiary, operating independently of Mitsubishi Electric. The firm was also revealed to have passed the $100 million mark in annual revenue, representing a 33% growth year on year.

Nozomi's newfound status follows the release of Nozomi Arc, an automated threat response tool designed for operational environments.

As part of the company's desire to solve what Nozomi CRO Kevin Isaac described as security alert fatigue from too much information, the firm recently released a company-trained AI assistant for OT/IoT security teams by the name of Vantage IQ. The tool is based on a secure LLM that learns from an organization’s unique OT/IoT asset, vulnerability, threat, and risk data to drill into data and deliver only relevant insights.

"All OT operators are dealing with the same issues: more severe and frequent attacks combined with a shortage of skilled talent that hinders their defense," a Nozomi spokesperson told this title upon the tool's launch. "Vantage IQ gives stakeholders instant awareness of the most critical issues in their full OT/IoT environment. Especially for teams that are new to industrial cybersecurity or lack dedicated resources, it replicates the domain expertise of a seasoned OT/IoT security analyst to make sure they never miss a critical issue."

Nozomi also explained it was using AI to fight AI, which has exacerbated the threat landscape across reconnaissance and planning to data exfiltration and execution. A fundamental issue is the decades-old technology running in many industrial environments, leaving them susceptible to AI-driven attacks.

Such security issues can lead to not just physical damage and safety risks for industrial operations, but also economic impact and cascading failures across the interconnected infrastructure.

"Especially toward critical infrastructure like water treatment facilities or the power grid, attacks on OT systems can be the difference between life and death," Nozomi said.

The escalating OT threat hasn't just been noticed by Mitsubishi, with ServiceNow recently snapping up Nozomi rival Armis for $7.75 billion in December.