NeuralTrust, a Barcelona-based platform for securing AI agents in enterprise environments, has raised $20M in a seed round led by Alstin Capital, in what the company describes as the largest cybersecurity seed financing raised by an EU company to date.
The round includes VentureFriends, Seaya, Kibo Ventures, Banc Sabadell, EA Ventures Plug and Play Fund, and Finaves, the venture capital fund of IESE Business School, alongside public funding from the European Innovation Council and Spain’s State Research Agency. The capital will be used to expand NeuralTrust’s engineering team, deepen integration across its product suite, and grow its presence across the European market.
Addressing The Market Opportunity
As AI agents move from experimentation into core enterprise infrastructure, governance is not keeping pace. Gartner projects that by 2027, 40 percent of enterprises will demote or decommission autonomous AI agents due to governance failures identified only after production incidents. Fortune 500 companies are on track to operate more than 150,000 agents each by 2028, yet only 13 percent of firms report being prepared to manage them at that scale.
The problem is structural. Inside a large enterprise, agents are built by different teams on different platforms, connecting to internal systems, databases, and external tools, and acting autonomously. Most security teams cannot account for how many agents are running, what each one is authorized to do, or whether any have been manipulated into leaking data or taking unintended actions.
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How The Technology Works
NeuralTrust addresses this through three integrated products. TrustGate is an agent gateway that brokers every LLM, MCP, and tool call, creating a single enforcement point through which all agent traffic passes. TrustGuard is a runtime security engine that detects and stops threats across every platform and endpoint where agents operate, regardless of how they were built or deployed. TrustLens is a posture management layer that identifies every agent running in an enterprise and tracks its behavior inside and outside the security perimeter.
The three products are designed to work together, eliminating blind spots that arise when security tools operate independently. NeuralTrust currently inspects millions of agent interactions each day. Around 1.2 percent are flagged as malicious, involving attempts to extract data, hijack tools, or push agents beyond their operating parameters, each caught and stopped in real time.
The company’s research team has also contributed to the broader field, identifying new classes of attack including multi-turn jailbreaks and multimodal techniques that are now part of the OWASP AI Security Project taxonomy.
Growth And Market Traction
NeuralTrust’s customers include AirEuropa, Abanca, Iberia, and Banc Sabadell, alongside global banks, airlines, energy companies, and government agencies. Ninety-two percent of its customers report annual revenues above $1B, with 80 percent based in Europe and 20 percent operating internationally. In the first quarter of 2026, the company doubled its full-year 2025 ARR.
The platform has been independently recognized by Gartner as a Representative Vendor in two Market Guides, by KuppingerCole as a Leader in its 2025 Leadership Compass for Generative AI Defense, and by MarketsandMarkets as a Leader in its 2026 Agentic AI Security Quadrant.
NeuralTrust was founded by CEO Joan Vendrell, who previously led AI deployment and security as Chief Data Officer at Mango following roles at Amazon and McKinsey, CTO Victor Garcia, who led security architecture in regulated telecom and banking environments, and COO Alejandro Domingo, who served as Associate Partner at McKinsey before scaling a startup to exit.
Expansion Plans
The $20M round will fund engineering growth, deeper integration across TrustGate, TrustGuard, and TrustLens, and broader coverage of AI models, tools, and platforms as the agent ecosystem expands. Operating from Barcelona and London, NeuralTrust is targeting market leadership in Europe by the end of 2026, with international expansion to follow.
Looking Ahead
Joan Vendrell, Co-Founder and CEO of NeuralTrust, described the company’s position at this stage of the market: “AI agents are now part of enterprise operations, but the controls protecting them are still catching up. This round allows us to keep building the infrastructure layer that makes AI adoption measurable, governable, and safe. Our mission has not changed since day one: turn AI security into a strategic advantage for the enterprises that will define the next decade.”
Alexander Meyer-Scharenberg, Partner at Alstin Capital, explained the firm’s decision to lead the round: “AI agents are entering enterprise infrastructure faster than security teams can adapt, so the window to establish control is now. What convinced us to lead this round was not just an exceptional product, but also the team’s clarity on where the real problem sits. They’ve built a genuine control layer, not another point solution, and enterprises can operationalize it today. We believe securing AI agents in enterprise infrastructure is becoming one of the defining problems in cybersecurity and NeuralTrust is best placed to own it.”
About NeuralTrust
NeuralTrust is a platform for securing and governing AI agents in enterprise environments, operating from offices in Barcelona and London. Its three-product suite, TrustGate, TrustGuard, and TrustLens, gives enterprises a single layer to identify, control, and protect every AI agent running across their organization. Customers include global banks, airlines, energy companies, and government agencies. NeuralTrust has been recognized as a category leader by Gartner, KuppingerCole, and MarketsandMarkets.
