Armis Inc., a startup that helps companies secure connected devices such as printers and cell towers, has raised $435 million from investors at a $6.1 billion valuation.

Goldman Sachs’ growth equity arm led the investment. Armis said in its announcement of the deal today that Alphabet Inc.’s CapitalG growth fund, Evolution Equity Partners and several unnamed returning backers chipped in as well. The raise comes three months after Armis’ annual recurring revenue topped $300 million.

The company’s flagship Centrix platform is designed to protect 5G base stations, factory robots, medical devices and other connected devices from cyberattacks. The company says that the platform collects data on more than 6 billion internet-linked systems. Centrix uses artificial intelligence to scan those systems for malicious activity.

It’s not unusual for a laptop to run a new application the user has never opened before. The same is not true for connected devices. In many cases, such systems are designed to perform a narrow set of tasks using preinstalled software. The presence of new software is often a sign of malicious activity. 

Armis’ Centrix platform spots new software installations along with other connected device anomalies. It can, for example, detect if a robotic arm attempts to establish a network connection to a system with which it usually doesn’t interact. When Centrix identifies malicious activity, it isolates the affected device from the rest of the network and notifies administrators.

Customers can augment the platform’s core feature set with more than a half-dozen extensions provided by Armis. One extension provides access to threat intelligence on hacking campaigns and vulnerabilities. Another, Smart Active Querying, can query connected devices for specific technical data. During security patch rollouts, administrators can use the extension to check whether the patch has been applied successfully. 

Armis will use its newly raised capital to extend Centrix’s capabilities. “We’re expanding our platform to deliver not just real-time asset intelligence, but also context, understanding how assets interact, how they behave, and how to prioritize what matters most,” Armis President and Chief Revenue Officer Alex Mosher wrote in a blog post today. “This evolution will help our customers move from visibility to true cyber exposure management, connecting security outcomes directly to business impact.”

Armis also plans to make more acquisitions. This past March, it bought a fellow connected device security startup called Otorio Ltd. in a deal reportedly worth $120 million. The company earlier acquired Silk Security Inc. for $150 million. Armis disclosed today that its acquisitions are generating millions of dollars in incremental revenue.

The software maker has set a goal of growing its annual recurring revenue to $1 billion within three years. It could also go public in that frame frame. According to CNBC, Armis currently plans to list its shares in late 2026 or early 2027 but may decide to delay the offering.

Photo: Armis