Tenet Security announced it emerged from stealth with $6 million in seed funding to help enterprises secure autonomous AI agents. The round was led by The Westly Group and MizMaa Ventures.
The company was founded by offensive security researchers Barak Sternberg and Nevo Poran. Before launching Tenet, Sternberg and Poran helped build Cisco’s AI Defense and led early work on threats targeting autonomous AI systems. They also previously founded Wild Pointer, a cybersecurity company that served Fortune 500 customers and scaled to a seven-figure annual revenue business.
Tenet is built around patent-pending Agent-side Simulation technology, which predicts and simulates an AI agent’s likely next actions before they execute against production systems. If a path appears risky, Tenet can intervene before damage occurs while providing a trace explaining why the action was blocked.
The company is focused on a growing enterprise security challenge as AI agents are increasingly granted access to critical systems, data, applications, and workflows. Tenet said traditional security tools can monitor users, endpoints, or prompts, but often lack visibility into how agents behave after they begin taking autonomous actions.
Tenet’s platform is designed to secure AI agents at runtime and prevent threats such as unauthorized access, data exfiltration, agent manipulation, and “Agentjacking,” where malicious instructions embedded in emails, logs, documents, databases, or other data sources can alter an agent’s behavior.
The company’s launch follows research from Tenet Threat Labs demonstrating Agentjacking as a class of attack that manipulates AI agents into executing attacker-controlled actions. In testing, Tenet said its research team validated the technique across more than 100 enterprise environments and found thousands of organizations potentially exposed through publicly accessible attack paths.
Tenet said early deployments have shown the operational challenges enterprises face as AI agent usage grows. One legal-sector enterprise with $1 billion in ARR expanded its use of AI agents from two deployments to more than 20 over six months while using Tenet’s platform, during which the company said more than 10 attempted attacks were detected and blocked. In another Fortune 1000 enterprise deployment, Tenet identified a runaway AI agent generating tens of thousands of dollars in unnecessary token consumption over a single weekend.
The funding will support continued product development, expansion of Tenet Threat Labs, growth of the company’s North American go-to-market operations, and broader coverage across emerging AI agent frameworks and enterprise environments.
Tenet is advised by cybersecurity and enterprise technology leaders including David Schwed, former CISO of Robinhood; Rick Scott, former CISO of BNY; Israel Bryski, former CISO of MIO Partners; Tomer Schwartz, co-founder at Dazz; and Lior Tal, former CEO of Coralogix.
KEY QUOTES:
“AI agents may be the biggest productivity unlock enterprises have seen in decades, which is why organizations are moving so quickly to deploy them. But we’re also entering a world where autonomous agents are interacting with systems, data, and other agents in ways most security tools were never designed to understand. That creates an entirely new security layer that requires a fundamentally different approach to protection.”
Barak Sternberg, Co-Founder and CEO of Tenet Security
“We’re increasingly seeing AI agents become part of the attack path itself. Attackers can manipulate agents to access sensitive data, abuse privileges, or take actions on their behalf in ways traditional security tools were never designed to detect. The challenge isn’t simply monitoring prompts or API traffic, but understanding and controlling agent behavior in real time. The only place left to catch these threats is at runtime, in the moment an agent decides to act.”
Nevo Poran, Co-Founder and CTO of Tenet Security
