The TL;DR
- We’re launching Fable Security
- We raised $31 million led by Greylock Partners for our Seed and Redpoint Ventures for our Series A
- Despite spending billions, companies are still at risk
- Human error is the problem, but we reject that it can’t be fixed
- We’re building the modern human risk platform—that shapes behavior directly
We couldn’t be prouder to launch Fable Security today. We’re emerging out of stealth with $31 million in funding —our Seed led by Greylock and our Series A led by Redpoint. But this milestone isn’t just about fundraising; it’s a testament to the vision we share with our customers and partners, and the growing recognition that there is a huge hole in cybersecurity: the risk posed by human error.
Why now: AI is weaponizing threats
Despite spending billions annually on cybersecurity tools and training, organizations remain more vulnerable than ever to cyber attack. The reason? Human error. Shared credentials. Publicly-accessible documents. Unpatched systems. Secrets in code. Phishing clicks. And more. Human error is involved in more than 6 out of 10 breaches. And now attackers are weaponizing their operations with AI, delivering threats that grow more numerous and sophisticated by the day.
Security awareness training: a tired playbook
They say insanity is doing the same thing over and over and expecting a different result. Yet, companies keep fighting human error with the same tired playbook: generic, outdated training and broad-based phishing simulations. We don’t blame them—they’re simply trying to check the boxes required by today’s privacy laws and cybersecurity frameworks, equipped with the limited tools they have available.
While leading product and data science at Abnormal AI, we saw the limits of even the most advanced cybersecurity technology: companies fall victim to simple, preventable human mistakes over and over again. We weren’t just frustrated by the outdated tools available; we were troubled by the industry’s quiet resignation that people were the problem.
People aren’t the problem
We reject that notion. Human error isn’t inevitable. It’s addressable. In a world of billions of annual attacks—made more powerful by AI—even the smartest defenses depend on the everyday choices people make. That’s why we built Fable: a platform that brings together the best of AI, behavioral data science, and thoughtful design to shape material behaviors directly in the moment—not punishing , but with clarity, context, and action.
We’ve reimagined human risk management in the age of AI
So, what are we building here at Fable? It’s a platform that thinks about human risk as a process—a self-reinforcing system that synthesizes risk from thousands of human behavior signals, pinpoints the riskiest behaviors, and then auto-generates AI interventions to shape those behaviors, in real time, right where people work. The system learns from the actions people take and assesses risk anew—a first-of-its-kind, closed-loop engine for continuously driving down human risk for enterprises.
There’s a huge hole in cybersecurity, and we’re bringing the best of AI to fill it
Our customers use Fable in three primary ways:
- Assess risk. Visualize and deeply understand employee risk at the individual, cohort, and organization level. Drill into risk factors and understand even the discrete behavior signals that comprise risk.
- Shape behavior. Auto-generate and deploy targeted AI interventions such as video briefings, nudges, two-way chats, and workflows to prompt behavior change in the moment.
- Ensure compliance. Run relevant, modern training and social engineering simulations that are highly-specific to employees’ role, access, and behaviors.
People are changing behavior—for the better
Of course, where the rubber really hits the road is with customers: how they use Fable, and what value they get from it. Our customers’ outcomes surprise even us. They’re reducing phishing clicks by 85 percent, cutting PII exposure by more than 60 percent, and accelerating time-to-behavior change from weeks to hours.
Beyond that, our customers are delighting their employees with…a security program? (You read that right.) We’re getting tons of positive feedback to our nudges and briefings, and an average score of 4.8 stars. In a segment known for clunky tools, stale content, and reputational drag, these results change the narrative for security teams.
We’re rewriting the story
Now, with the partnership of Greylock Partners, Redpoint Ventures, and a community of forward-thinking customers (the “Fabelievers”), we’re coming in hot. Our mission is to eliminate the human attack surface. It’s a big, bold mission and will require hard work and plenty of collaboration. But we’re here to redefine what’s possible in human risk management—and to prove that with the right approach, employees don’t have to be the weakest link. They can, in fact, be your strongest one.
Curious about the Fable platform? Let us give you a complimentary risk assessment. We promise you won’t be disappointed.
And if you’re considering a career building a real-world, critical AI solution that meaningfully reduces human risk, while being part of a mission-driven culture, join our journey!
