Fable Security, a human risk management platform focused on behavioural-based cybersecurity, has launched with $31m in funding.
The funding includes a seed round from Greylock Partners and a Series A led by Redpoint Ventures. Greylock, which also incubated Abnormal AI and Palo Alto Networks, initiated Fable through its Greylock Edge programme.
Fable Security offers a real-time solution to address the growing challenge of human-driven cybersecurity risk. The platform monitors employee behaviour to identify potential vulnerabilities and automatically delivers personalised, risk-based interventions. These are deployed directly through tools like Slack or email at the exact moment of heightened risk, adapting to each employee’s behaviour and role.
The capital raised will be used to accelerate product development, expand customer reach, and deepen platform capabilities. The aim is to scale its precision-based behavioural interventions across enterprises, especially as AI-driven threats such as phishing and vishing continue to evolve rapidly.
The platform has already been adopted by major organisations including Pennymac, Genesys, and the DNC. Fable claims its clients have reported a reduction of over 85% in phishing clicks and a 60% drop in personal identifiable information (PII) exposures, along with improved employee engagement and saved training time.
Fable was founded by Nicole Jiang, CEO, and Dr. Sanny Liao, CPO—both former founding members of Abnormal AI. The duo bring deep experience in behavioural economics, AI/ML, and cybersecurity, and aim to reframe how organisations approach human-layer risk.
“Companies spend billions on cybersecurity, but human risk is still the biggest unsolved problem that every security team wants to fix,” Fable Security CEO Nicole Jiang said. “One-size-fits-all security awareness programmes with generic training modules and phishing simulations do little to actually reduce risk.”
Redpoint Ventures managing director Erica Brescia added, “Security awareness training has become a checkbox—ineffective, outdated, and blind to how people actually behave. Fable is the first company I’ve seen that throws out the playbook of a failing category.”
The company was launched less than a year ago and reports rapid traction with early enterprise customers. Notably, during an A/B test at Pennymac, Fable achieved a 13x faster behaviour change using a personalised intervention over a generic briefing.
Fable has so far raised a total of $31m, comprising its initial seed funding from Greylock and a follow-on Series A from Redpoint Ventures.
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