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Ostra Security

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Ostra Security provides managed cybersecurity services combining advanced tools, proprietary technology, and security talent to deliver enterprise-level threat hunting, remediation, and monitoring for businesses of all sizes. The company makes security accessible to growing organizations that cannot afford large dedicated security teams.

CybersecurityEnterprise Software

Founders & leadership

MKMichael Kennedy
Michael KennedyFounderFounder of Ostra Security, a managed cybersecurity provider offering threat hunting, remediation, and monitoring to organizations of varying sizes. He previously spent over a decade at Optum leading infrastructure, security, and M&A integration programs, worked earlier in technology consulting, and focuses on the intersection of cybersecurity, AI, and governance, including through his involvement with Truth in Cyber.

Investors · 2

Rally Ventures Management, Llclisted by Rally Ventures Management, LlcMenlo Park · $100K – $4M

How we know: Rally Ventures Management, Llc's portfolio page · funding news · the VCSheet dataset · Not right? Tell us

Funding

SEC filings, press & company announcements
  • Undisclosed amountSeries AAug 2025 · 3 sources
    Source ↗

Source: company announcements and press reports — follow each round's link for the claim.

Related companies · 1

TharrosTharros provides advanced cybersecurity solutions designed for agencies, built on domain expertise and vulnerability assessment capabilities. The company focuses on helping government and defense missions address cyber threats and maintain operational security.

Companies working in the same space as Ostra Security.

In the news

Ostra Security Extends Series A to $9.5 Millionthesaasnews.com · Aug 2025

Frequently asked questions

What does Ostra Security do?
Ostra Security provides managed cybersecurity services combining advanced tools, proprietary technology, and security talent to deliver enterprise-level threat hunting, remediation, and monitoring for businesses of all sizes. The company makes security accessible to growing organizations that cannot afford large dedicated security teams.
Who founded Ostra Security?
Ostra Security was founded by Michael Kennedy.
Who are Ostra Security's investors?
Ostra Security's investors include General Catalyst, Rally Ventures Management, Llc.