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Scam Sniffer
Real-time phishing, wallet-drainer, and scammer-address blocklists with a free browser extension
Potential
Continuously updated blocklists used by major wallets + free extension
Free plan: limited detections, basic safe browsing, Twitter warnings, signature security Premium (default on extension): unlimited detections, no ads, 0.25% fee on selected DEX trades (currently listed as free in some materials) API: open-source database free; Standard from $999/month; Enterprise custom
Get StartedPotential
Continuously updated blocklists used by major wallets + free extension
Risk
Low Risk
Rating
4.2/5
Best For
Blocking known phishing sites and wallet drainers in real time
Domains & Addresses on Blocklists
258K+
Scams Identified
705K+
URLs Scanned
47M+
Trusted by
Binance, Rabby, Phantom, Bybit & others
About security
Key Features
- Real-time domain, URL, and address blocklists
- Free browser extension that warns before you land on known malicious sites
- Signature-time risk alerts (dangerous approvals, balance changes, NFT listings)
- Multi-chain coverage (EVM + Solana, Sui, BTC, TON, Tron, etc.)
- X/Twitter phishing link scanning and social-engineering alerts
- Open-source public scam database on GitHub
- Research reports on phishing trends and drainer families
How it works
Candidate scam sites and addresses are collected from multiple sources, verified (automated + human review), and pushed to the blocklists. The browser extension uses the same data that major wallets query. When you visit a flagged site or interact with a risky address, you receive a clear warning.
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Our Verdict
Scam Sniffer is one of the stronger pure blocklist / threat-intelligence tools in Web3. Its data is trusted by major wallets, the free extension is useful for everyday phishing protection, and the open research is a plus. It works best as a complementary layer alongside transaction-simulation tools (Kerberus, Web3 Antivirus, etc.) rather than as a standalone solution. Recommended for anyone who regularly clicks links in Twitter, Discord, or Telegram.
Pros
- Strong, continuously updated blocklists
- Used by major wallets and platforms
- Free browser extension for individuals
- Broad multi-chain coverage
- Open research and public database
- Good at catching phishing sites and drainers early
Cons
- Extension ratings are moderate (around 4.3)
- Premium model includes a small fee on some DEX trades
- API pricing is expensive for small teams
- Relies heavily on blocklists (can miss brand-new zero-day sites)
How to Use
- 1Go to https://www.scamsniffer.io/ or the Chrome Web Store
- 2Install the free Scam Sniffer extension
- 3Browse normally — warnings appear on known phishing/drainer sites
- 4(Optional) Switch between Free and Premium plans in the extension settings
Common Questions
Is Scam Sniffer free?
Which chains does it cover?
Does it simulate transactions?
Who uses Scam Sniffer data?
Can it stop brand-new scams?
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Quick Info
- Potential
- Continuously updated blocklists used by major wallets + free extension
- Risk Level
- Low Risk
- Chain
- Multi-chain (EVM, Solana, Sui, BTC, TON, Tron & more)
- Pricing
- Freemium
- Best For
- Blocking known phishing sites and wallet drainers in real time
- Audience
- Crypto users, wallet providers, security teams, anyone active on Twitter/Discord
- Free Tier
- Free plan: limited detections, basic safe browsing, Twitter warnings, signature security Premium (default on extension): unlimited detections, no ads, 0.25% fee on selected DEX trades (currently listed as free in some materials) API: open-source database free; Standard from $999/month; Enterprise custom
Continuously updated blocklists used by major wallets + free extension
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