Armis Acquires OTORIO to Expand OT/CPS Security Capabilities

Armis Acquires AI Cybersecurity Company CTCI

February 14, 2024

Cybersecurity

Armis has acquired CTCI (Cyber Threat Cognitive Intelligence), an AI-native company specializing in pre-attack threat hunting, in a private deal that closed in mid-February 2024. Armis will integrate CTCI's technology and employees into its Armis Centrix platform to create an early-warning, AI-driven threat intelligence capability for government and enterprise customers.

Armis Acquires Silk Security for $150 Million

April 17, 2024

Cybersecurity

Armis has acquired cyber risk prioritization and remediation startup Silk Security for $150 million, integrating Silk's platform into its Armis Centrix vulnerability prioritization and remediation product. The deal expands Armis' capability set to provide a consolidated, end-to-end view of security findings and automate remediation across on-prem, cloud, code, and application security tools.

One Equity Partners Invests in Armis

November 29, 2021

Cybersecurity

One Equity Partners (OEP) has made a growth investment in Armis to accelerate the cybersecurity company's platform development, global go-to-market expansion, and to support future acquisitions. OEP will join Armis' board and help lead acquisition strategy while Armis continues to be operated by its co-founders from its headquarters in California.

Axonius Acquires Cynerio

July 30, 2025

Cybersecurity

Axonius has acquired Cynerio, a specialist in medical-device and healthcare IoT security, to accelerate the company's expansion into the healthcare market. Deal terms were reported at about $180 million (potentially rising to $250 million on milestones), while Axonius' announcement described the transaction as "more than $100 million" in a cash-and-stock deal.

Menlo Security Acquires Votiro

February 27, 2025

Cybersecurity

Menlo Security has acquired Votiro to integrate Votiro’s data and file security capabilities—including Content Disarm & Reconstruction (CDR) and data loss prevention—into Menlo’s enterprise browser and workspace security suite. The deal expands Menlo’s product capabilities and total addressable market, accelerating revenue opportunities after Menlo recently surpassed $100 million ARR.

Tyto Athene Acquires stackArmor Inc.

May 8, 2025

Cybersecurity

Tyto Athene, a federal systems integrator and portfolio company of Arlington Capital Partners, has acquired stackArmor, a provider of FedRAMP, FISMA/RMF and CMMC/DFARS compliance acceleration, cloud and security automation solutions. The acquisition will make stackArmor a wholly-owned subsidiary of Tyto and expand Tyto's cloud, cyber automation and compliance capabilities for defense, national security and other regulated federal customers.