Today, we at Repello AI are delighted to share that we’ve raised $1.2 million in seed funding, backed by Venture Highway (acquired by General Catalyst) · pi Ventures · Entrepreneurs First and visionary angels who deeply understand cybersecurity, AI, and the growing urgency around AI safety.

Together, we’re building a security-first foundation for the age of intelligent software.

Securing the Unpredictable Future of AI

AI is not just evolving, it’s undergoing a radical transformation.

Where traditional software followed deterministic logic, today’s AI systems learn, adapt, and act independently. They process sensitive information, generate critical outputs, and interface with everything from codebases to customer data.

But the more powerful and capable these systems become, the more fragile and exploitable they are.

We’ve seen it firsthand:

• A Slackbot manipulated into mass-sending “YOU’RE FIRED” emails.

• A self-driving system fooled into accelerating through traffic by malicious signage.

• GenAI copilots leaking sensitive data or producing toxic content from a single manipulated input.

The AI era brings new surface areas, new risks, and a fundamentally different threat model. Old tools weren’t built for this. That’s why Repello AI exists.

Building for the AI Security Era

At Repello AI, we secure AI the way attackers try to break it.

We bring the mindset of red teamers, the diligence of security researchers, and the speed of hackers to help AI builders ship safer, more reliable software without slowing down innovation.

Our product stack includes two core offerings:

🔴 ARTEMIS – Automated Red Teaming for AI

ARTEMIS is our continuous adversarial testing engine for LLM and GenAI applications.

It conducts real-world attacks - prompt injections, jailbreaks, data leaks, model extraction, and more across text, image, and audio.

It involves actionable reports, compliance-aligned insights (EU AI Act, OWASP LLM Top 10), and a real-time view into how your AI systems behave under pressure.

ARTEMIS is like a simulated cyber security employee working 24/7 to stress test your AI before it hits production.

🛡 Repello Guard – Runtime Defense for Modern AI

Repello Guard is where detection meets defense.

Once vulnerabilities are identified, Repello Guard deploys customised guardrails, input/output filters, and remediation playbooks that integrate into your workflow, so threats are neutralized before they can harm your users or brand.

Together, ARTEMIS and Repello Guard create a full AI security layer across pre-deployment, post-deployment and monitoring.

At Repello, we’ve uncovered vulnerabilities in agent orchestration tools, coding copilots, and AI customer service platforms that could lead to massive data exposure, impersonation, or abuse.

The risks aren’t theoretical. They’re happening. And they’re growing.

According to internal research,

• Over 20% of real-world AI security attacks succeed within the first 60 seconds. 

• Over 87% of AI applications have critical vulnerabilities.

These threats are faster, sneakier, and harder to detect than traditional exploits.

Speed alone isn’t enough; we need smart, scalable defense.

That’s the mission of RepelloAI: build secure-by-design AI infrastructure, so builders can innovate without fear.

Backed by Builders of the Internet and Intelligence

We’re honored to have the support of leaders who have shaped the digital and AI landscape:

• Matt Clifford – Chair, UK AI Safety Summit

• Charlie Songhurst – Board Member, Meta; ex-VP, Microsoft

• Vivek Raghavan – Co-founder, Sarvam.ai; ex-Chief Architect of IndiaStack

• Neeraj Arora – ex-CBO, WhatsApp; MD, General Catalyst

• Hari Srinivasan – Senior Director, Palo Alto Networks

Their backing not only funds us, it affirms our belief that AI security is foundational to the future of intelligent systems.

What’s Ahead

This funding round allows us to:

• Expand ARTEMIS and Repello Guard to evolve with the AI threat landscape.

• Open-sourcing some of our internal tools to democratize AI red teaming

• Grow our team across engineering, research, and go-to-market functions

If you’re passionate about AI security and want to work at the bleeding edge, we’re hiring. Let’s build the security layer of the intelligence era together.

Let’s Make AI Safer

If you’re building with AI and want to be sure your systems are resilient, trustworthy, and secure, get in touch.

Get a demo now ->