Fable Security, a rising player in next-generation cybersecurity, has raised $31 million in funding to reinvent how modern applications are secured - especially in the context of AI-powered platforms and developer-first environments. The round was led by Greylock Partners and Redpoint Ventures, two of the most prominent names in venture capital.

Co-founded by Nicole Jiang and Sanny Liao, Fable Security is on a mission to simplify, automate, and scale security for today’s fast-moving tech teams - without slowing them down.

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Modern Apps, Modern Risks

As cloud-native development accelerates and AI becomes embedded into every workflow, traditional approaches to securing software have fallen behind. Static scans, isolated audits, and long feedback loops simply can’t keep pace.

Fable Security is building a platform that helps developers and security teams identify and fix vulnerabilities as code is written and shipped - across the full software development lifecycle (SDLC).

Their system integrates directly into tools developers already use, offering:

• Real-time code analysis
  
• Runtime application monitoring
  
• Policy enforcement for LLM integrations
  
• Contextual vulnerability prioritization
  

By shifting security left - and right - Fable empowers teams to catch issues earlier, respond faster, and reduce the burden of manual triage.

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Why Founders Should Pay Close Attention

Here’s where the real insight kicks in:

Speed has become a company’s greatest asset - but also its greatest security liability. The faster teams ship, the harder it becomes to see what’s slipping

through the cracks. For founders building in fast-moving markets, that’s a ticking time bomb.

Fable changes the dynamic. It allows security to scale with engineering, not fight against it. Founders who embed Fable early in their stack can:

• Avoid costly rewrites and patch cycles
  
• Ship faster with higher confidence
  
• Position security as a core part of developer productivity
  
• Win bigger deals by satisfying enterprise security demands earlier
  

That kind of leverage doesn’t just protect products - it protects valuation.

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Backed by the Best

Fable Security’s $31 million raise is a clear vote of confidence from two of Silicon Valley’s most elite firms:

• Greylock Partners, known for investing in Palo Alto Networks, Rubrik, and Coinbase
  
• Redpoint Ventures, early backers of Snowflake, Looker, and Stripe
  

Their involvement brings more than capital - it unlocks decades of experience in scaling security and infrastructure companies from seed to IPO.

Fable plans to use the funds to expand its engineering team, build go-to-market motion, and accelerate its roadmap for AI-integrated security monitoring.

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A Perfect Market Moment

The global application security market is expected to grow from $9.5 billion in 2024 to over $29.4 billion by 2032, according to Fortune Business Insights, driven largely by DevSecOps adoption, zero-trust architectures, and AI risk.

In parallel, GitHub's Octoverse Report noted a 40% YoY increase in commits per developer - proof that engineering teams are shipping faster than ever. This velocity creates opportunity - but also exposes teams to overlooked attack vectors, unpatched services, and unchecked AI behaviors.

And those AI behaviors are no small risk. Over 60% of enterprises say they’re embedding AI into customer-facing applications (McKinsey, 2024), yet less than 12% have proper policies for LLM security, according to Gartner. That’s a dangerous gap - and a huge opportunity for platforms like Fable to fill it.

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The Market Opportunity

The application security market is massive and only growing. According to Fortune Business Insights, it’s expected to expand from $9.5 billion in 2024 to over $29.4 billion by 2032, driven by demand for DevSecOps solutions and the explosion of microservices.

At the same time, developers are deploying more code, faster than ever. GitHub reports a 40% year-over-year increase in commits per developer across enterprise teams. Meanwhile, over 60% of companies now say they’re embedding AI into production-facing applications, adding a new layer of security risk.

This convergence - velocity plus complexity - makes traditional perimeter defenses obsolete. Fable steps in where the modern stack actually lives: inside the code, at runtime, and across the workflow.

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Fable’s Secret Weapon: AI-Aware Security

Fable is one of the few companies focused explicitly on securing AI-integrated applications. With generative models being used in chatbots, data pipelines, customer support, and analytics, there's growing concern about:

• Prompt injection attacks
  
• Data leakage through LLM APIs
  
• Unvetted third-party model behavior
  

Fable’s platform includes AI-specific security policies, anomaly detection for model inputs/outputs, and support for monitoring custom-built and third-party integrations with tools like OpenAI and HuggingFace.

This gives companies deploying AI products a first-mover advantage in security posture, especially in regulated or enterprise contexts.

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Designed for Developers

Unlike traditional security tools that feel bolted-on or adversarial, Fable is designed for developer empathy:

• Lightweight IDE plugins
  
• GitHub and GitLab CI integrations
  
• Slack notifications for remediation
  
• JIRA and Asana workflow sync
  

This design philosophy ensures adoption isn’t a fight - it’s a natural part of the coding process. That’s what makes Fable sticky, and why so many engineering-led teams are becoming early adopters.

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What’s Next for Fable Security

Armed with $31 million in fresh capital, Fable plans to:

• Expand to more IDEs and cloud-native runtimes
  
• Launch self-serve onboarding for startups and SMBs
  
• Build out SOC 2/ISO compliance automation modules
  
• Release a public “AI Security Benchmark” for LLM-integrated apps
  

Its long-term goal is clear: become the standard for securing the modern development stack - from AI chatbots to mission-critical SaaS.