Tenex Secures $250 Million in Funding to Transform Cybersecurity Response Times
By Michael Novinson
March 31, 2026
A groundbreaking development in the cybersecurity landscape has emerged as Tenex, a security operations startup founded by Eric Foster, the former president of Cyderes, raised an impressive $250 million. This new funding, led by Crosspoint Capital Partners, is poised to enhance Tenex’s ability to unify existing technologies with artificial intelligence, a crucial step towards combating the rapid evolution of cyber threats.
The funding will enable the Sarasota, Florida-based company to significantly reduce response times to cyber incidents, an urgent necessity given that attackers are now capable of moving from initial compromise to command-and-control operations within a mere minute. Foster emphasized the urgency of this issue, stating, “With the increasing speed of cyber attacks, our investment in tools that can take direct action—such as isolating threats or removing malicious content—is essential.”
A Vision for the Future
Tenex, established in 2024, has already made strides in the industry, employing 73 individuals and closing its Series A funding round of $27 million just seven months prior. Foster has been at the helm since inception, bringing a wealth of experience from his years as president of managed detection and response provider Cyderes, and tenure at companies like Fishtech and RiskIQ.
Foster passionately believes that the current moment represents a critical inflection point in cybersecurity. “We have a significant advantage in this rapidly changing landscape of threats,” he remarked during a recent interview with Information Security Media Group.
Revolutionizing Threat Detection
One of Tenex’s notable strengths lies in its ability to spot threats often overlooked by traditional endpoint tools. Foster articulated the company’s strategy, asserting that the best AI firms are distinguished not only by their technological models but also by the expertise of their teams. By maximizing productivity through AI enhancements, Tenex is positioned to drastically improve its output. He noted that skilled hires can now produce results in a month that previously took a year.
“We’re hiring aggressively—bringing in as many software and AI engineers, as well as data scientists, as we can,” Foster stated. “These individuals amplify effectiveness exponentially.”
Most cybersecurity providers currently face limitations due to human constraints, often only reviewing a fraction of alerts. However, Tenex is committed to leveraging AI and automation to analyze comprehensive telemetry data, providing decisive verdicts within one minute. Foster articulated the significance of this transition from partial to comprehensive visibility, marking it as a pivotal evolution in security operations.
“The fundamental shift for our platform hinges on AI and automation, which enables us to assess 100% of customer alert telemetry more efficiently than any human analyst,” he explained.
A Synergetic Approach to Cybersecurity
The human element remains integral at Tenex, as human analysts oversee, validate, and continuously enhance the AI-driven decisions. This dual approach allows for automated actions while retaining crucial human judgment for high-stakes decisions. By assigning routine tasks to AI, human analysts are free to concentrate on complex investigations, ensuring both accountability and ongoing improvement in processes.
“Every decision and action we take is underpinned by complete human oversight and accountability,” Foster emphasized, showcasing the importance of a balanced approach in cybersecurity operations.
Beyond enhancing detection capabilities, Tenex is heavily investing in technological advancements that empower their platform to take proactive measures, such as isolating threats and eliminating malicious content. The incorporation of agentic AI and cutting-edge automation techniques positions Tenex to execute these tasks effectively, even in environments lacking traditional integrations, thereby minimizing detection-response lag and ultimately reducing dwell time.
“While metrics like mean time to respond or detect are significant, the ultimate priority is dwell time,” Foster stated, reiterating the importance of minimizing the duration a threat remains undetected in a system.
Navigating Competitive Waters
In a rapidly evolving industry, Tenex faces competition from both established consulting firms and newer AI-native companies. Many incumbents grapple with legacy infrastructures and outdated business models that hinder their ability to adapt to AI-driven paradigms. Conversely, Tenex was constructed with AI as the foundational element, enabling it to respond and innovate with agility.
Foster expressed optimism, stating, “There has never been a more opportune time to build and grow a business in this sector." With plans to expand their workforce significantly, Tenex anticipates hiring between 250 and 300 new employees within the current year alone.
As the cybersecurity landscape grows increasingly complex, Tenex’s strategic focus on AI, automation, and human expertise positions it at the forefront of creating a safer digital environment. Through this significant investment, the company is set to redefine the standards of speed and efficacy in cybersecurity responses, charting a new course in protecting against ever-evolving cyber threats.