Application Security Posture Management and Remediation

Heeler is an application security startup founded in 2023 by alumni of Rapid7 that’s focused on unifying threat modeling, vulnerability management, and incident response into a single, continuously updated platform.

Heeler analyzes runtime environments to map exploitability, identify high-risk attack paths, and prioritize vulnerabilities based on real operational impact rather than generic severity scores. Heeler automates remediation by generating validated pull requests for dependency upgrades and code fixes, using dependency graph analysis to prevent breakage and ensure safe upgrade paths.

Heeler calculates the safest remediation path and uses agentic workflows to apply the fix and run multi-stage compilation and CI/CD checks. Developers receive a validated PR they can trust, one that’s fully validated, tested, and ready to merge. The platform also enforces preventive guardrails to block risky libraries from entering production, reducing supply chain exposure.

Norwest Venture Partners led the $8.5 million seed round (July 2024) with participation from Strom Ventures LLC. Heeler aims to replace fragmented AppSec processes with a tightly integrated workflow that aligns code-level insights with business-level risk.