CloneGuard

CloneGuard is a research tool that automatically detects code clone propagation introduced by AI coding assistants like GitHub Copilot — before the developer accepts the suggestion. HOW IT WORKS: 1. Reads all existing code from your GitHub editor 2. Builds a live index using Karp-Rabin hashing 3. When Copilot suggests code — checks against index 4. Shows warning if Type 1 or Type 2 clone detected FEATURES: - Real-time clone detection — fires automatically - Detects Type 1 (exact) and Type 2 (renamed) clones - Live codebase index built from your current file - Non-blocking warning popup with similarity score - Shows matched function name and line number - Works on github.com and github.dev - All processing done locally — no code sent externally WHAT ARE CODE CLONES: Type 1 — Exact clone: identical code copied verbatim Type 2 — Renamed clone: same logic, different variable names Built for research at Stevens Institute of Technology. Clone Propagation in AI-Assisted Coding Environments.