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How We Added WebAuthn to a Browser-Based RDP Client

July 2, 2026 · Unit 42 · Severity: MEDIUM

Unit 42 shares the reverse-engineering journey of building the first RDP client outside of Windows to support WebAuthn redirection. The achievement enables passwordless, phishing-resistant authentication for browser-based RDP sessions. This represents a significant step forward for secure remote access beyond traditional Windows clients.

Key Takeaways

  • How We Added WebAuthn to a Browser-Based RDP Client — A look inside the reverse-engineering journey of building the first RDP client outside of...
  • Staying informed on emerging threats is key to maintaining a strong security posture.
  • Regular security awareness training and layered defenses remain the foundation of any effective cybersecurity program.
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