Security Fact-checked 2026-08-14

ScamSniffer

Established 2023

Real-time phishing detection for crypto sites — blocks drainer pages before they load.

ScamSniffer maintains a database of phishing sites, wallet drainers and fake dapps, exposed through a free browser extension that warns or blocks before you connect a wallet, plus a site-checker for any URL. It's one of the fastest-moving threat-intel teams in crypto.

Quick facts

Founded

2023

Pros

Blocks drainer and phishing pages automatically
Free extension plus a URL checker
Actively updated with new scam patterns

Cons

Extension itself needs trust (review permissions)
Detection can't be perfect — stay vigilant
Best paired with transaction simulation in your wallet

Best for

Everyone who clicks links from crypto Twitter or Discord

Fees

Free.

Security notes

Layer it with a simulating wallet (Rabby) — the extension catches bad sites, the wallet catches bad transactions. Defence in depth.

phishingprotectionextension

Frequently asked questions

What is ScamSniffer?

ScamSniffer is Real-time phishing detection for crypto sites — blocks drainer pages before they load. ScamSniffer maintains a database of phishing sites, wallet drainers and fake dapps, exposed through a free browser extension that warns or blocks before you connect a wallet, plus a site-checker for any URL. It's one of the fastest-moving threat-intel teams in crypto.

Is ScamSniffer safe to use?

Layer it with a simulating wallet (Rabby) — the extension catches bad sites, the wallet catches bad transactions. Defence in depth. As always, verify details on the official site before trusting funds to any service.

How much does ScamSniffer cost?

Free. Figures change — confirm current pricing on the official site before deciding.

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