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How We Added WebAuthn to a Browser-Based RDP Client
July 2, 2026 · Unit 42 · Severity: MEDIUM
The article details Unit 42's reverse-engineering journey to create the first RDP client outside of Windows that supports WebAuthn redirection. It explains how this was implemented in a browser-based RDP client to enhance authentication security.
Key Takeaways
- Unit 42 built the first non-Windows RDP client with WebAuthn redirection.
- Reverse-engineering enabled secure authentication in browser-based remote desktop access.
- This advancement improves security for remote workers using web-based RDP clients.