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ScamSniffer

ScamSniffer

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About ScamSniffer

ScamSniffer is a browser extension and API service that detects malicious websites, wallet drainers and phishing threats across multiple chains to protect Web3 users.

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ScamSniffer is a comprehensive Web3 anti-scam platform designed to protect users from phishing attacks, wallet drainers, malware, and malicious transactions. It provides a multi-layered defense system built specifically for the evolving threats of the decentralized ecosystem. With tools like its powerful browser extension, API solution, and real-time threat detection, ScamSniffer offers unparalleled protection against Web3-specific exploits.

Backed by industry giants and used by leading platforms such as ByBit, Phantom, OneKey, and TokenPocket, ScamSniffer is reshaping digital safety for crypto users and developers alike. Whether you're an individual user or an enterprise integrating security at scale, ScamSniffer provides the tools to navigate the decentralized web safely and confidently.

ScamSniffer is redefining security in the Web3 era with a real-time, user-first approach to scam prevention. In an environment where wallet drainers have already stolen over $800 million since 2023, ScamSniffer offers a much-needed layer of protection. The platform scans and analyzes billions of data points daily—covering over 47 million URLs, identifying more than 705,000 scams, and blocking 258,000+ malicious domains to date.

Originally launched as a response to the alarming rise in phishing scams, ScamSniffer has evolved into an ecosystem of tools that provide proactive protection. The browser extension, for instance, is designed for instant recognition of phishing sites and scam links, issuing warnings before users even click. Its robust Signature Security Engine detects malicious smart contract signature requests in real time—flagging suspicious NFT listings, token approvals, or swap transactions before users sign them.

Beyond its individual protection tools, ScamSniffer is also focused on serving platforms and enterprises with an advanced API solution. This lets apps, wallets, and exchanges integrate ScamSniffer’s malicious website detection and blacklist into their own user workflows, further enhancing ecosystem-wide safety.

The platform’s focus on actionable intelligence and user protection has earned partnerships with respected industry names such as SlowMist, ChainAbuse, Forta, and Etherscan. Unlike other generalized anti-phishing services like GoPlus or Cyvers, ScamSniffer distinguishes itself by delivering fine-grained signature analysis and first-layer threat blocking that are specifically optimized for Web3.

Its research team regularly publishes in-depth security breakdowns, identifying trends in phishing vectors, Google Ads exploits, and signature spoofing tactics. By combining cutting-edge technology with real-time analysis and continuous updates, ScamSniffer acts as a firewall between unsuspecting users and the many threats lurking in the decentralized landscape.

ScamSniffer provides numerous benefits and features that make it an essential tool in the Web3 security toolkit:

Browser Extension Protection: Instantly alerts users when a phishing or malicious site is detected, offering real-time browser security without the need for manual checks.
Signature Security Engine: Provides pre-signing risk analysis by scanning for known scam patterns in smart contract signatures, including token approvals, NFT offers, and balance-affecting transactions.
Multi-Chain Coverage: Protects users across major ecosystems such as EVM, Solana, BTC, TON, and Tron from wallet drainers and malicious protocols.
Twitter/X Phishing Detection: Flags malicious comments, fake verified accounts, and phishing ads embedded in social media platforms.
ScamSniffer API: Allows wallets, exchanges, and apps to embed phishing detection into their platforms with real-time updates from ScamSniffer’s blacklist database.
Open Source Scam Database: Access a transparent database of scam URLs and domains, updated daily, to help developers and communities stay informed.
Free & Premium Plans: Individuals can get started with free protection, while platforms can scale security using affordable premium or enterprise-level services.
Backed by Security Experts: The platform is supported by top names in cybersecurity, including Bitdefender, DarkHandbook, and DeFiHackLabs.

ScamSniffer offers a quick and easy onboarding process for both individual users and enterprise clients seeking to protect themselves or their platforms from Web3 scams and malicious interactions.

Install the Extension: Visit the official ScamSniffer site and click “Add to Chrome” to install the browser extension. It works out of the box and provides immediate phishing detection.
Enable Signature Security: Once installed, allow ScamSniffer to analyze your wallet signatures. It will highlight risks before you confirm actions like swaps, NFT listings, and token approvals.
Choose Your Plan: Stay on the free tier with core features, or upgrade to premium for unlimited detections, no ads, and priority support.
Explore API Integration: If you're a platform, wallet, or exchange, request access to the ScamSniffer API for real-time malicious domain and address detection.
Monitor Scam Activity: Check ScamSniffer’s open-source database to stay up-to-date with the latest scam domains, drainers, and phishing vectors.
Connect with Community: Join the community on Discord or follow them on Twitter for real-time alerts and updates.

ScamSniffer FAQ

ScamSniffer uses a real-time malicious website detection engine that scans links before users even interact with them. It combines blacklists, behavioral signals, and research-backed detection methods to block suspicious domains. This proactive defense identifies and neutralizes wallet drainer threats spread via Discord, Google Ads, and Twitter/X before damage can occur.
ScamSniffer's signature analysis engine goes far beyond generic alerts by examining the intent behind every transaction. It flags high-risk actions such as unauthorized token approvals, NFT listings, or suspicious swap transactions—based on a growing database of 20+ signature types known for phishing or exploits. ScamSniffer helps users avoid signing malicious transactions in the first place.
Yes. ScamSniffer offers a powerful malicious website and blacklist API for custom integrations. Wallets, dApps, exchanges, and other platforms can embed ScamSniffer’s threat intelligence into their products to offer users safer browsing and signing experiences. This allows for scalable, enterprise-grade scam prevention infrastructure.
ScamSniffer’s Twitter Phishing Warning system detects malicious links hidden in tweets, replies, and promoted posts. It monitors for fake verified accounts, compromised influencer profiles, and scams embedded in ads. Users are warned before clicking links from risky sources—preventing credential theft or wallet access compromises via phishing campaigns. All detection is automated and updated in real time via ScamSniffer's threat database.
Threats are not limited to a single chain. ScamSniffer covers EVM, Solana, BTC, TON, and Tron ecosystems because scammers often shift tactics across networks. By supporting multiple chains, ScamSniffer ensures that users, regardless of where they interact, receive consistent and high-quality protection from phishing, malware, and malicious contract exploits.