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Refractal 🇬🇧

Seed

Security layer for AI agents, protecting against prompt injection and credential exfiltration.

About Refractal

The main product provides a security layer for AI agents, protecting against various vulnerabilities such as prompt injection and credential exfiltration by implementing a four-tier defense system that includes ingestion, classification, enforcement, and attestation. It integrates with existing models and telemetry, ensuring compliance and visibility across enterprise systems while managing risks associated with AI tool interactions.

Refractal is a UK-based company founded in 2026, now around 8 people. It has raised $942k in disclosed funding. FundFinder classes it as AI & ML.

Founded by Strahinja Janjusevic (Co-Founder and CEO; previously Microsoft, NASA Goddard Space Flight Center; Harvard University), Adam F. (Co-founder and COO; repeat founder; previously Creator Fund, Loci; University of Edinburgh).

Its investors also appear on FundFinder's most-active lists for Seed · B2B (120 funds), Seed · Fintech (111 funds), Seed · Generalist (110 funds).

Company facts from Harmonic and public filings; team backgrounds from public profiles. Refreshed weekly.

Want the latest on Refractal? Our research agent pulls the current description, latest round and full investor base from public sources (about a minute).

Seed · Mar 2026

  • Blue Wire Capital — Blue Wire Capital is a London-based early-stage venture firm founded in 2013. · cheques £300k – £1M
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