Realm.Security, a Boston-based cybersecurity company building what it calls the industry’s first AI-native Security Data Pipeline Platform, has secured a $2 million strategic investment from Presidio Ventures, the corporate venture arm of Japan-headquartered Sumitomo Corporation. The company said it will use the funding and Sumitomo’s global network to accelerate expansion across Asia-Pacific through channel partners, while continuing to strengthen its executive leadership as demand grows for tools that help security teams manage the rising volumes of telemetry data and the costs of storing and processing it.
The investment closes out what Realm described as a breakout year, marked by rapid scaling and customer adoption. Realm said it has raised $22 million in the past 15 months and expanded headcount by 250% in 2025. The company positions its platform as an alternative approach to security data management for enterprises grappling with “data noise” and escalating SIEM ingestion expenses, emphasizing capabilities to manage, filter, and normalize security data so security teams can reduce waste and focus on high-priority threats.
Realm framed Japan as an entry point for its channel-led go-to-market strategy, citing the prevalence of outsourced Security Operation Centers among enterprises. Through Presidio Ventures, Realm is also aligning with a corporate parent that includes SCSK, which the announcement described as a global system integrator delivering managed IT and cybersecurity services to more than 8,000 enterprise customers, creating potential pathways for partnerships and expanded distribution in the region.
The strategic backing arrives shortly after Realm’s $15 million Series A round in October, led by Jump Capital with participation from Glasswing Ventures and Accomplice. The company also cited recent third-party recognition, including being named an “Emerging Leader” in the Security Data Pipeline Platform category in an analyst report from SACR and receiving a 2025 BostInno Fire Award as one of 50 companies making a significant impact on the local startup ecosystem. Realm further pointed to customer-reported outcomes, highlighting Vensure Employer Solutions, a 10,000-person benefits and payroll provider, which reported reducing firewall log volumes by 83% and saving $250,000 annually using Realm’s platform.
Alongside expansion efforts, Realm has continued adding senior leadership to support commercialization and product development. The company recently named Holly Cappello as chief revenue officer and Colin Jermain as vice president of data science. Cappello brings more than a decade of cybersecurity sales experience, most recently serving as SVP of Global Sales at Cado Security, which Darktrace acquired, and previously holding senior sales roles at Menlo Security and Carbon Black. Jermain joined from SecurityScorecard, where he was a senior director of data science, and previously held multiple senior data science roles at Vectra AI. Realm said the appointments reflect a push to deepen its leadership in revenue, data, and AI as it enters its next growth phase.
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“We’re excited to bring on Presidio Ventures as a strategic investor as we meet rising global demand for our platform from security teams who are drowning in data noise and facing spiraling storage and compute costs,” said Pete Martin, co-founder and CEO of Realm.Security. “This investment caps an impressive first full calendar year for Realm, and we believe Sumitomo’s deep connections will help us enter the Asia-Pacific market and scale quickly in 2026. The region is now the third-largest cybersecurity market globally, and Japan is a particularly compelling entry point for our channel-led strategy, given that many enterprises there outsource their Security Operation Centers.”
Pete Martin, Co-Founder and CEO, Realm.Security
“Realm is using AI to give every enterprise security team the ability to manage, filter, and normalize security data in ways that, until recently, were only possible for Fortune 1000 companies with dedicated cybersecurity data engineering teams,” said Ross Leav of Presidio Ventures. “We’re excited to join their mission to democratize this capability as the cybersecurity industry faces a data crisis. At the same time, the industry also faces a human resource crisis. Especially in Japan where talented cyber professionals are becoming an increasingly scarce resource, enterprises need to find ways to do more with less. This is a perfect opportunity to employ AI, both to meet the challenge of data overload but also to enable cyber professionals to focus their attention on the most critical threats. We believe Realm can be an essential tool for modernizing our own security operations services while at the same time improving outcomes for the many customers who rely on us.”
Ross Leav, Presidio Ventures
