Take back your safety in Web3:
no more
phishing websites

phishing websites

Explore Web3 with full confidence guarded by our security browser extension. Web3 Antivirus proactively protects you from malicious smart contracts and phishing websites and warns you not to fall into a scam.

The extension is free!

Websites blocklisted
Analyzed transactions
Supported chains
Almost there
Coming soon

What’s inside

Web3 Antivirus installs as a Chrome extension. It vets the parties and properties you interact with on Web3 to warn you before you take potentially dangerous actions.
smart contract analysis
  • Web3 Antivirus audits smart contracts behind transactions to identify dangerous logic, critical vulnerabilities, and compromising permissions to access your assets.smart contract analysis tabletsmart contract analysis mobile
  • W3A checks token’s characteristics such as creation date, collection, and owners as well as collection’s smart contract to determine that the transaction is safe.Token analysis tabletToken analysis mobile
  • To be certain that the transaction is riskless, W3A checks all smart contracts tied to it and stimulates the flow of the transaction to see the outcome.Transaction emulation tabletTransaction emulation mobile
  • While you browse through Web3 space, W3A checks domain names against extensive blocklists and allowlists using AI similarity validation, and alerts you if it detects phishing.Phishing website detection tabletPhishing website detection mobile

How W3A protects you


Once you install W3A, the active protection is immediately on


Get a visual warning if you head to a phishing website


Receive a real time risk report before approving a transaction


Decide if you want to stop or proceed based on the presented report

Keep in mind: Web3 Antivirus will never ask for access to your wallet, assets, or for your seed phrase.

Select your level of protection


Free forever. No wallet or credit card required.

Phishing websites validation
Smart contract analysis
Token analysis
Transaction simulation
Risks and vulnerabilities detection

30 day opt-out guarantee.

Everything in our Basic plan plus...

More detailed smart contract risk reporting

Community validation

IP infringement detection

Distinguish your product with Web3 Antivirus

Integrate with us to give your users more protection or validate your project to build trust in the community
dangerous smart contracts detected
12 terabytes
of structured ML-processed data
< 1 day
to make your first API call

Why W3A?

Hassle-free installation

Simply add the extension to your browser. No payment or personal info required.

Full transparency

W3A is open-source so you can make sure that the extension operates precisely as described.

Easy to understand

The reports use visual cues and plain language to explain threats so you don’t have to be a Web3 expert to stay safe.

Constantly upgrading

The level of protection offered by W3A is always increasing, guarding you from new scams as soon as they’re identified.

Poisoning attacks detection
Total amount of assets in poisoned wallets
Total amount of money lost due to poisoning attacks
Total poisoning attacks
24h poisoning attacks

But don't just take it from us


Scott Williams


After a few minutes with it - the deep analysis component is really nice and easy to understand. Kudos!
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Start protecting your Web3 assets now

Free forever
Easy setup
No access to your wallet

Any questions left?

Browse our FAQs below or email our friendly team at: [email protected]

  • Web3 Antivirus can be added to your browser as an extension directly from the official Chrome Web Store.

    It is open-source so you can see everything it’s able to do. Visit our GitHub repo to build your own copy.

    W3A will also never ask for your seed phrase, it cannot access your wallet, and it does not require any information that should be kept secure.

  • Web3 Antivirus addresses specific Web3 security issues that traditional antivirus protection does not.

    Traditional antivirus attempts to protect your computer by blocking downloads of malicious software and stopping execution of malicious code. Attempts to gain access to your wallet and assets via phishing or fraudulent smart contracts would go completely undetected by traditional antivirus software.

    Web3 specific scams are only recognized by Web3-specific security solutions like W3A.

  • W3A stands guard while you browse the internet, investigating the other parties and assets which you interact with. Before you approve any transaction, W3A presents a risk report to help you decide if this is an authentic transaction or a potential scam.

  • Simply add the Chrome extension from the Chrome Web Store or install it directly from the GitHub open-source repository. Once it’s enabled, it begins working immediately and alerts you anytime you have a wallet transaction call or browse to a potentially threatening site.

    Note: Web3 Antivirus will never ask for access to your wallet, assets, or for your seed phrase.

  • No. W3A never asks for your seed phrase and has zero access to your wallet and its assets.

  • Transaction simulation helps to show you what happens if you approve a transaction. This means you can discover potential vulnerabilities or side effects without compromising the security of your wallet.

    To execute the simulation, W3A analyzes the smart contract behind the transaction and traces each call that the contract makes. It then audits those connected contracts in the same manner and shows you the result of the contracts full execution.

  • Yes. Our basic plan is completely free. It can be installed directly through the Chrome Web Store.

  • We are constantly upgrading Web3 Antivirus and enhancing its abilities to detect various threats and scams within seconds.

    Soon to be released features include the W3A Dashboard which allows you to see logs of threats you’ve encountered, detailed transaction lists, and delegated token rights.

    We’re also improving auditing methodology, and will soon integrate new blockchain protocols and wallets.

Industry & product news

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