Works

Moonkat

Asia's first blockchain anti-scam browser extension — real-time malicious contract detection, transaction transparency, asset transfer preview, and community-driven threat reporting

Category
UI · UX
Role
Co-founder & UI/UX Designer
Timeline
Sep 2022 – Aug 2023

Overview

Moonkat was a Taipei startup building Asia's first blockchain anti-scam browser extension. I co-founded it and owned UI/UX end-to-end, working directly alongside the other founders and a small engineering team to ship real-time contract detection, transaction transparency, and community threat reporting.

Malicious contract detected — Moonkat warns the user that the current transaction has been reported as a malicious address

Three scenarios Moonkat surfaced at sign time: a flagged malicious contract, a safe sign-in signature, and a zero-asset-change transaction.

Challenge

New on-chain scams were outpacing existing protections. Anti-scam tools at the time were opaque and complex — they warned without explaining why, and assumed prior crypto literacy. NFT collectors and Web3 newcomers, especially in emerging Asian markets like Taiwan, had no intuitive way to judge a contract's risk before signing.

Approach

  • Co-founded Moonkat and led design end-to-end, working directly with the other founders and engineering to ship the first public release.
  • Mapped the complete user flow for engaging with DApps to identify fraud-prevention intervention points.
  • Designed beginner-friendly UIs for each transaction scenario — malicious-contract detection, safe signature confirmation, asset-transfer preview, and no-change notifications — grounded in on-chain scam-tactic research and competitive analysis.
  • Built a community reporting mechanism so users could flag malicious addresses and contracts, feeding the detection model over time.
  • Paired research findings into product features and user-facing education so newcomers understood why a contract was risky, not just that it was.

Results

  • Shipped Asia's first blockchain anti-scam browser extension, anticipating scam risks 1–2 years ahead of existing solutions.
  • Improved user protection through intuitive sign-time warnings and educational cues beginners could act on.
  • Grew to roughly 300 active users through targeted social-media outreach in the crypto-newcomer community.
  • Moonkat was later absorbed into Gogolook — Taiwan's leading anti-fraud company (known for Whoscall) — to continue research into future anti-scam directions.