Scam Sniffer
Scam Sniffer is a Web3 anti-phishing company that provides a Chrome extension, paid API, and open-source scam database used by wallets, exchanges, and security firms to detect and block cryptocurrency phishing sites and malicious token approvals.
- Company typePrivate
- Founded2021
- Headquarters—
- Headcount1–10
- GTM typeB2B and B2C
- OfferingSoftware
What Scam Sniffer does
Scam Sniffer is a Web3 anti-phishing and wallet-security company founded in 2021 that builds detection infrastructure for the Ethereum and broader EVM ecosystem. Its products include a consumer-facing Chrome extension, a paid API for wallets and exchanges, an open-source scam database, a Permit2 token-approval management tool, and an EIP-712 readability utility. The infrastructure has accumulated 47M+ URLs scanned, 705K+ identified scams, 258K+ blocked domains, 9.5M+ daily queries, and 150K+ browser-extension users, making it one of the more operationally deployed phishing-detection layers in Web3.
The company's business model is multi-tiered: a free consumer extension, a paid Standard API at $999/month, custom enterprise contracts, and a Premium DEX fee-based service (0.25% of swap value) that was made free in March 2025. Backers include principals from SlowMist and other Web3 security firms (evilcos, 23pds, SunSec), along with ecosystem grants from GitCoin, Scroll, Plancker, and Mask Network, rather than traditional venture capital. Distribution is anchored by integration partnerships with major wallets (Rabby, Phantom, TokenPocket, OneKey), exchanges (ByBit, Binance), and security/analytics providers (Chainalysis, GoPlus, Tenderly, MistTrack, CipherOwl, Revoke.Cash, RailGun, Zircuit).
Operationally, the company is small (1–10 employees) and capital-efficient, leveraging the credibility of its security-firm backers and open-source contributions to maintain position in a market where on-chain phishing losses declined ~83% from $494M in 2024 to $84M in 2025. The strategic question is whether sustained product expansion (Permit2 management, EIP-712 tooling) and enterprise monetization can offset a contracting underlying threat landscape.
Scam Sniffer firmographics
Firmographics- Name
- Scam Sniffer
- Legal name
- Scam Sniffer
- Website
- https://scamsniffer.io
- Company type
- Private
- Founded year
- 2021
- Operating status
- Operating
- Headcount range
- 1–10 employees
- Short description
- Scam Sniffer is a Web3 anti-phishing company that provides a Chrome extension, paid API, and open-source scam database used by wallets, exchanges, and security firms to detect and block cryptocurrency phishing sites and malicious token approvals.
- Ownership category
- akta.pro rank
Scam Sniffer industry classification
Industry- Product category
- Web3 Security Software
- NAICS
- Security Systems Services (except Locksmiths) (561621), Security Systems Services (56162), Investigation and Personal Background Check Services (561611)
- akta.pro primary industry
- Fraud Detection, Scam Prevention & Account Takeover (Crypto) (FSADALAF)
- akta.pro secondary industries
- Risk Scoring, Credit & Fraud Analytics (counterparty/wallet risk) (FSAPAJAF), Blockchain Analytics & Transaction Monitoring (FSADALAB)
Keywords
Scam Sniffer business model
Business model- GTM type
- B2B and B2C
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Operations, Infrastructure, Marketing or Sales
Revenue model
- Chrome Extension - Premium Features: Free tier with limited monthly detections; Premium tier charged at 0.25% fee on selected DEX trades (Uniswap and PancakeSwap), with a $400 maximum per address per month. As of March 2025, all DEX transactions are free. Premium users with purchased products get 3-month fee-free period.
- API Subscription (Standard): Standard tier at $999/month providing real-time domain blocklist and real-time address blocklist for B2B customers integrating anti-scam capabilities.
- API Subscription (Enterprise): Custom-priced enterprise tier with dedicated security infrastructure, most updated scam domains/addresses, real-time threat intelligence, malicious website scan, existing scan results search, and custom integration support.
- Open Source Database (Free): Free open-source scam database distributed via GitHub with 7-day delay updates, used by partners as a signal source and community resource.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Pay-as-you-go | Free open-source database with 7-day delay |
| Subscription | Monthly | API for B2B with real-time blocklists at $999/month |
| Subscription | Multi-year contract | Custom enterprise tier with full threat intelligence |
| Freemium | Pay-as-you-go | Free Chrome extension with limited detections |
Go-to-market motion4 records
Distribution channels4 records
Marketing channels9 records
Scam Sniffer product offering
Product offeringCore offering
Scam Sniffer operates a real-time Web3 anti-scam platform combining a Chrome browser extension for individual users with phishing site alerts and signature risk analysis, and an API for B2B customers providing malicious website detection and real-time blacklist capabilities. The platform covers EVM, Solana, BTC, Ton, and Tron chains and includes a Uniswap Permit2 authorization management tool with batch revocation features. An open-source scam database (updated daily with 7-day delay) is distributed via GitHub to support community adoption and partner integrations with major wallets, exchanges, and blockchain analytics platforms.
Product overview
Scam Sniffer is an all-in-one Web3 anti-scam solution offering both individual and enterprise protection. The core products include the Chrome Extension for real-time browser protection and the API for malicious website detection. The Permit2 Management tool handles authorization management. The open-source Scam Database and EIP712 Readability tools round out the portfolio. Together they provide comprehensive Web3 security through safe browsing, transaction security, and on-chain monitoring capabilities.
Differentiator
Problem solved
Functional benefit
Products and services
- Scam Sniffer Chrome Extension Browser extension providing real-time Web3 safe browsing and signature security protection, alerting users when phishing sites are detected and analyzing transaction signatures before signing. Used by 150K+ individual Web3 users.
- Scam Sniffer API
Quantifiable outcome
- 150K+ users protected by Chrome extension
- +2 more outcomes
Companies that use Scam Sniffer
Customer profileNamed customers12 records
Segments3 records
Ideal customer profiles3 records
Scam Sniffer technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
AI capability3 records
Feature9 records
Scam Sniffer partnerships and signals
Strategic signalPartnerships
13 partnerships are on record, tiered core.
- SlowMistcoreSlowMist is a key technology partner integrated into Scam Sniffer's address checking system. SlowMist's threat intelligence API is used to validate spender addresses for suspicious behavior. SlowMist team co-discovered wallet drainer exploits with Scam Sniffer (e.g., EIP-712 normalization bypass). Industry veteran 'evilcos' from SlowMist backs the company.
- GoPlus SecuritycoreGoPlus Security is a technology partner integrated into Scam Sniffer's address checking. GoPlus Security's API validates spender addresses for suspicious activity. Industry veteran 'Mike' from GoPlus Security backs the company.
- DeFiHackLabscoreDeFiHackLabs is a strategic partner in security research and threat intelligence sharing. Industry veteran 'SunSec' from DeFiHackLabs backs the company. DeFiHackLabs contributes to the security research ecosystem alongside Scam Sniffer.
- RabbycoreRabby wallet integrates Scam Sniffer's scam database to provide users with real-time phishing protection. Rabby is listed as a primary database user alongside Phantom, ByBit, TokenPocket, and others.
- PhantomcorePhantom wallet integrates Scam Sniffer's scam database for phishing protection. One of the primary wallet partners using the open-source database.
- ChainalysiscoreChainalysis uses Scam Sniffer's scam database for blockchain analytics and compliance, integrating Web3 threat intelligence into their enterprise compliance solutions.
- ByBitcoreByBit exchange integrates Scam Sniffer's scam database for exchange-level security and user protection.
- BinancecoreBinance uses Scam Sniffer's scam database for exchange security operations and user fund protection.
- TokenPocketcoreTokenPocket wallet integrates Scam Sniffer's scam database for real-time phishing protection for its users.
- MistTrackcoreMistTrack uses Scam Sniffer's scam database for crypto tracing and anti-money laundering analytics.
- OneKeycoreOneKey hardware wallet integrates Scam Sniffer's scam database for hardware-level phishing protection.
- Revoke.CashcoreRevoke.Cash partners with Scam Sniffer for approval revocation and scam prevention, with Scam Sniffer's database supporting the revocation tool.
- TenderlycoreTenderly's transaction simulation API is used by Scam Sniffer to simulate transaction execution and detect unauthorized approvals and token transfers before signing.
Scale indicators11 records
Recent moves5 records
Expansion highlights5 records
Scam Sniffer competitors and assessment
Company assessmentBroad incumbents
- TRM Labs: TRM Labs provides blockchain intelligence, transaction monitoring, and risk scoring for crypto businesses and government agencies. It is a broad incumbent that competes with Scam Sniffer in the wallet risk scoring and threat intelligence category.
- Chainalysis: Chainalysis is the leading blockchain analytics and compliance platform used by institutions and government agencies. It is both a customer of Scam Sniffer's database and a broad incumbent in adjacent Web3 compliance, AML, and threat intelligence.
Direct peers
- SlowMist: SlowMist is a blockchain security firm offering threat intelligence, audit, and anti-money laundering services. It is both an integration partner (address validation API) and a competitor in Web3 security research, phishing detection, and threat intelligence feeds.
- GoPlus Security: GoPlus Security provides a Web3 security API covering contract detection, malicious address identification, and risk scoring. It is both a technology partner feeding data into Scam Sniffer and a direct competitor in the Web3 security API market serving wallets and dApps.
- Web3 Antivirus: Web3 Antivirus is a browser-based Web3 security extension providing real-time malicious website and transaction detection. It competes directly with Scam Sniffer's Chrome extension for individual Web3 users seeking pre-signature phishing protection.
- Pocket Universe: Pocket Universe (formerly Blowfish) is a Web3 transaction simulation and scam detection platform integrated into wallets. It competes directly with Scam Sniffer's pre-signature risk assessment and transaction simulation features for protecting users from phishing and wallet drainers.
- Revoke.cash: Revoke.cash is a token approval management and revocation tool used by Web3 users to prevent malicious approvals. It is both a partner (using Scam Sniffer's database) and a direct peer in the approval management and scam prevention space.
- Blockaid: Blockaid is a Web3 security company providing real-time threat detection for malicious transactions, dApps, and phishing sites. It is a direct competitor serving the same wallet providers and exchanges as Scam Sniffer with overlapping transaction simulation and signature analysis capabilities.
Emerging players
- Stelo Labs: Stelo Labs is a Web3 transaction simulation and scam detection provider integrated with wallets. It is an emerging player competing with Scam Sniffer in transaction simulation and pre-signature risk assessment.
- Harpie: Harpie is an emerging Web3 security platform that protects users from wallet drainers and scam approvals with pre-signature blocking. It competes with Scam Sniffer's Chrome extension consumer protection features.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Scam Sniffer social profiles
Digital presenceScam Sniffer financial estimates
Financial estimateRevenue estimate
Valuation estimate
Scam Sniffer leadership team
Management profileNumber of profiles
Profiles6 records
Scam Sniffer funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Scam Sniffer M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Scam Sniffer
What does Scam Sniffer do?
Scam Sniffer operates a real-time Web3 anti-scam platform combining a Chrome browser extension for individual users with phishing site alerts and signature risk analysis, and an API for B2B customers providing malicious website detection and real-time blacklist capabilities. The platform covers EVM, Solana, BTC, Ton, and Tron chains and includes a Uniswap Permit2 authorization management tool with batch revocation features. An open-source scam database (updated daily with 7-day delay) is distributed via GitHub to support community adoption and partner integrations with major wallets, exchanges, and blockchain analytics platforms.
Is Scam Sniffer a public or private company?
Scam Sniffer is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Scam Sniffer founded?
Scam Sniffer was founded in 2021. It employs 1 to 10 people.
How does Scam Sniffer make money?
Four revenue lines are on record. Chrome Extension - Premium Features are the primary driver. The others are API Subscription (Standard), API Subscription (Enterprise) and open Source Database (Free).
Who are Scam Sniffer's main competitors?
Broad incumbents on record are TRM Labs and Chainalysis. Direct peers are SlowMist, GoPlus Security, Web3 Antivirus, Pocket Universe, Revoke.cash and Blockaid. Emerging players are Stelo Labs and Harpie.
Does Scam Sniffer have an API?
Yes. Malicious Website Detection and Blacklist API that provides real-time domain blocklist and address blocklist capabilities. Enables partners and developers to integrate scam detection into their Web3 applications. Developer documentation is at docs.scamsniffer.io/reference.
What industry is Scam Sniffer in?
Scam Sniffer's product category is Web3 Security Software. Its primary akta.pro industry code is FSADALAF, Fraud Detection, Scam Prevention & Account Takeover (Crypto), with a secondary code of FSAPAJAF, Risk Scoring, Credit & Fraud Analytics (counterparty/wallet risk). Its NAICS code is 561621.