NeuralTrust Raises $20 Million in Europe's Largest‑Ever Cybersecurity Seed Round to Secure Enterprise AI Agents Running Inside Banks, Airlines, and Governments

Barcelona‑based NeuralTrust has raised $20 million (€17.2 million) in a seed funding round that the company describes as the largest cybersecurity seed financing ever raised by a European company. The round was led by Munich‑based Alstin Capital, with participation from VentureFriends, Seaya, Kibo Ventures, Banc Sabadell, EA Ventures Plug and Play Fund, and Finaves, the venture capital fund of IESE Business School. The company also receives public funding support from the European Innovation Council and Spain's State Research Agency. The announcement was made on June 17, 2026.

NeuralTrust was founded in 2022 by Joan Vendrell, Victor Garcia, and Alejandro Domingo. Vendrell, who serves as CEO, previously held executive roles at Mango, Amazon, and McKinsey, bringing enterprise‑scale commercial experience to a company built on deep technical AI security research.

The Problem No Enterprise Can Ignore

Gartner has projected that by 2027, 40 percent of enterprises will shut down their AI agent deployments because they only discover governance problems after something has already gone wrong in production. NeuralTrust's own data adds quantitative weight to that warning. Across its customer base, the company has found that 1.2 percent of all enterprise AI agent interactions are malicious in nature.

That number may sound small. At scale, it is not. An enterprise running tens of thousands of AI agent interactions per day at 1.2 percent malicious activity is facing dozens to hundreds of potential security incidents daily, most of which are invisible to standard security tooling because standard security tooling was not designed for agentic AI systems. Firewalls, endpoint protection, and traditional identity management solutions were built for humans and conventional software. They do not know what an AI agent is, cannot trace its decisions, and have no mechanism to detect whether it is being manipulated through a prompt injection, leaking sensitive data through a tool call, or operating outside its intended permissions.

The opacity is the core of the problem. Most large companies do not have a complete picture of how many AI agents are running in their systems, what each is authorised to access, what tools each can invoke, or whether any have been compromised. The agent layer, which is now embedded in customer service, finance operations, HR workflows, and supply chain management at a growing number of large enterprises, is functionally a blind spot.

A Three‑Product Platform for the Entire Agent Governance Stack

NeuralTrust has built its platform across three products that address different layers of the AI agent security problem.

TrustGate manages agent traffic across models and tools, operating as a control layer that routes, filters, and monitors what agents are sending to external APIs, model providers, and internal systems. It applies zero‑trust principles to agent‑to‑system interactions, requiring explicit authorisation for each connection rather than assuming that because an agent was deployed by an IT team it should have broad access to everything that team can access.

TrustGuard provides runtime security for AI agents in deployment, monitoring live agent behaviour, detecting anomalous patterns, and blocking interactions that match attack signatures. The company has contributed to the OWASP AI Security Project and has independently identified and documented new attack techniques that have been integrated into the framework, suggesting its research organisation is producing original security intelligence rather than simply implementing existing standards.

TrustLens provides visibility into agent deployment and behaviour over time, creating the audit trail and observability layer that compliance, risk, and governance teams need to demonstrate that AI agents operating inside regulated industries are behaving within defined parameters.

Together the three products form what NeuralTrust positions as the control plane for enterprise AI agent operations, not a point solution that addresses one specific vulnerability but an infrastructure layer that makes the entire agent estate observable, controllable, and auditable.

Enterprise Traction That Justifies the Round Size

For a seed‑stage company, NeuralTrust's customer profile is unusual. Its clients include Iberia, AirEuropa, Abanca, and Banc Sabadell, a combination of a major international airline, a regional airline, and two significant financial institutions. The company reports that 92 percent of its customers have annual revenues above $1 billion, and that 80 percent are based in Europe, with 20 percent international.

The financial metrics are equally striking. In the first quarter of 2026 alone, the company doubled its entire 2025 annual recurring revenue. That rate of growth, compressing a full year of revenue into a single quarter, is among the highest disclosed by any European enterprise security company at seed stage.

Strategic partnerships with KPMG, Capgemini, and Sopra Steria give NeuralTrust access to the large systems integrator relationships that typically determine enterprise software adoption at the Fortune 500 and European FTSE‑equivalent level. These are not distribution agreements in name only. At the enterprise accounts NeuralTrust is targeting, KPMG and Capgemini are often the parties implementing the core systems that AI agents are being deployed on top of. Having them as channel partners means NeuralTrust's platform can be embedded into AI deployment projects from the start rather than added after security problems emerge.

Alexander Meyer‑Scharenberg, partner at Alstin Capital, put the investment rationale directly: AI agents are entering enterprise infrastructure faster than security teams can adapt, and the window to establish control is now. He described NeuralTrust as having built a genuine control layer rather than another point solution, one that enterprises can operationalise today.

Key facts about the round and company:

• Seed round: $20 million (€17.2 million), Europe's largest cybersecurity seed to date
• Lead investor: Alstin Capital (Munich)
• Other investors: VentureFriends, Seaya, Kibo Ventures, Banc Sabadell, EA Ventures Plug and Play Fund, Finaves
• Public support: European Innovation Council, Spain's State Research Agency (AEI)
• Founded: 2022, by Joan Vendrell, Victor Garcia, and Alejandro Domingo
• Customers: Iberia, AirEuropa, Abanca, Banc Sabadell; 92% have annual revenue above $1 billion
• Q1 2026 ARR growth: doubled full‑year 2025 ARR in a single quarter
• Strategic partners: KPMG, Capgemini, Sopra Steria

The $20 million seed gives NeuralTrust the capital to hire engineers, deepen platform integration, and expand across European enterprise markets that are rapidly deploying AI agents into regulated operations without adequate security infrastructure. In a category where the first mover that achieves enterprise trust at scale is likely to define the default security standard for years, the combination of early traction, research credibility, and channel partnerships makes NeuralTrust's position meaningfully stronger than most companies at seed stage.