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Auriga Cyber Ventures
Auriga Cyber Ventures operates as a niche venture capital firm focused exclusively on early-stage cybersecurity and enterprise infrastructure startups.
Auriga Cyber Ventures
Auriga Cyber Ventures operates as a niche venture capital firm focused exclusively on early-stage cybersecurity and enterprise infrastructure startups. Founded by Michael Kluse and Bryan Rosensteel, the firm draws directly on the partners' experience co-founding and scaling a cybersecurity company, a background that shapes its reputation as an operator-led investor. The firm targets pre-seed through Series A companies, positioning itself as a first-check partner for technical founders building in network security, identity management, and cloud infrastructure segments. The firm runs a concentrated portfolio strategy, typically leading or co-leading rounds with check sizes estimated below $3 million per initial investment. Auriga's publicly disclosed portfolio includes Material Security, a cloud email security platform, and Sublime Security, which offers an open-source email security detection framework. Both investments align with the firm's stated thesis of backing tools that security teams adopt willingly rather than purchase through compliance mandates. Geographic focus skews toward US-based startups, though the firm has evaluated deals in Israel and Canada. The partnership structure remains compact, anchored by Kluse and Rosensteel with no publicly disclosed institutional LP base. The firm has not announced subsequent fund closes since its initial capital formation, and team size appears to stay deliberately lean to preserve hands-on engagement with portfolio companies. Adjacent vehicles or philanthropic arms have not been disclosed. Auriga's structural differentiator is its insistence on GP technical fluency. Both partners maintain active repositories and reference architectures for security tools, which portfolio companies use during product development. This deep integration between investor and builder — writing code, reviewing threat models, and connecting founders to enterprise security buyers — distinguishes the firm from generalist seed funds that back SaaS broadly. Succession and governance remain informal given the firm's size, with no public roadmap for institutionalizing the partnership beyond its founders.
General information
Firm type
Venture Capital
Year founded
—
AUM
Undisclosed
Location
Region
North America
Country
United States
City
—
Corporate office
—
Principals
Michael Kluse
Managing Partner
Bryan Rosensteel
Managing Partner
Sector focus
Frequently asked questions
Who runs investment decisions at Auriga Cyber Ventures?
Managing Partners Michael Kluse and Bryan Rosensteel make all investment decisions. Both founders previously built and exited a cybersecurity company before launching the firm, which means technical diligence and partnership decisions sit with the same two people. No investment committee or external advisors are publicly disclosed.
Does Auriga Cyber Ventures lead rounds or participate as a co-investor?
Auriga typically leads or co-leads pre-seed and seed rounds, taking board seats when leading. In later Series A rounds, the firm has followed on alongside larger institutional investors. This posture reflects the partners' preference for active, concentrated positions where they can meaningfully shape product and go-to-market strategy.
What investment stages does Auriga Cyber Ventures target?
The firm writes first checks at pre-seed, seed, and occasionally Series A stages. Initial check sizes are estimated below $3 million based on disclosed portfolio rounds. Follow-on reserves are held for select companies, though the firm does not publicly disclose its reserve ratio.
Which sectors does Auriga Cyber Ventures explicitly avoid?
Auriga does not invest outside cybersecurity and adjacent enterprise infrastructure, explicitly passing on consumer technology, digital health, fintech, and climate. Within cybersecurity, the firm avoids traditional MSSP models and reseller-heavy businesses, preferring product companies with strong engineering cultures.
How is Auriga Cyber Ventures structured as a firm?
Auriga operates as a classic venture capital partnership managed by its two founders. It is not structured as a family office or corporate venture arm, and no institutional parent or anchor LP is publicly disclosed. The lean structure keeps all diligence, sourcing, and portfolio support within the core partnership.
How does Auriga Cyber Ventures source its deals?
The firm sources primarily through the founders' direct networks within the cybersecurity engineering community. Kluse and Rosensteel maintain active GitHub repositories and contribute to open-source security projects, which generates inbound from technical founders who recognize their work. The firm also co-invests with other operator-led seed funds, receiving referrals from former colleagues and portfolio company CTOs.
What is Auriga Cyber Ventures' known posture on co-investments alongside external GPs?
Auriga actively co-invests with other early-stage cybersecurity specialists and generalist seed funds. Publicly disclosed co-investors in portfolio rounds include prominent seed funds active in Silicon Valley. The firm's partners emphasize they prefer co-investors who can contribute technical due diligence rather than just capital.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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