Ostra Security is a managed security provider that delivers outcome-oriented managed security services. The company recently acquired Blackwell Security and is integrating Blackwell’s managed XDR platform, Pulse, into its offerings. The combined solution aims to provide comprehensive protection and simplify security for organizations facing complexity, limited internal resources, and heightened stakeholder expectations. Ostra emphasizes a high-touch, bespoke service model designed to improve security without increasing internal workloads. The company plans to use new funding to accelerate hiring, enhance technical capabilities, and further develop its service model. Investor support underscores confidence in Ostra’s vision and its ability to deliver measurable outcomes in a market challenged by inefficiencies and underperformance. Ostra Cybersecurity is a Minneapolis, MN–based provider of holistic, multi-layered managed Security as a Service for partners and their clients. The company combines proprietary solutions with Fortune 100–caliber tools, technology, and talent to detect, hunt, and fully remediate threats. It is led by new CEO Andrew Tewksbury and offers fully managed security capabilities tailored to small and mid-sized businesses (SMBs). Ostra plans to use new funding to nearly double its customer-facing teams across account management, channel marketing, customer success, and support. The company also intends to build a U.S.-based team focused on channel partner recruitment and support. To date, Ostra has raised $10M, with most funds coming in the past 18 months amid rising demand for a complete managed offering for SMBs. Ostra offers a multi-layered, fully managed service that combines modern cybersecurity tools, technology and talent to protect SMBs from email threats, ransomware, malware and other attacks. The company positions its solution as delivering the kind of protection Fortune 100 companies use, made accessible and affordable for smaller businesses. The article notes that more than 75% of cyberattacks target SMBs and that the average total cost of a data breach reached nearly $3 million in 2021, underscoring the market need. Ostra’s product is sold as a comprehensive managed service so clients receive ongoing, fully managed security operations. The recent funding will be used to support business development and operational initiatives and to strengthen and expand channel partner relationships. Company executives emphasize the goal of simplifying cybersecurity so clients can rely on Ostra to manage their security environment.

Total raised

$17M

Funding rounds

3

Latest round

Series A

Latest activity

Aug 2025