#Antivirus

Web3 Antivirus (W3A) is a free browser extension that warns before you connect or sign in Web3. Simulates transaction outcomes, flags honeypots, drainers, fake tokens, address poisoning, and phishing sites. Companion Security Dashboard for wallet “Toxic Score,” AML-ish address checks, and one-click approval revokes. MetaMask Snap for in-wallet alerts. Open source. Not a wallet and never asks for your seed. Tx deep-analysis is strongest on Ethereum; phishing blocking is broader. No Kerberus-style default DEX fee.

GoPlus is a Web3 security infrastructure company (APIs, app, network) with a consumer Chrome extension that watches phishing sites and transaction risk before you connect or sign. Same data stack behind Token Security checks used across DEXs and wallets. Flags honeypots, malicious contracts, unsafe approvals, scam URLs. Multi-chain (major EVMs + Solana in product claims). Not a wallet. Never needs your seed. Free extension for end users; GPS token and paid APIs power the wider GoPlus Network. Desktop browser shield, not OS antivirus.

DefiLlama Extension is a free Chrome add-on from the DefiLlama analytics team. Not a full “crypto antivirus.” Three practical jobs: inject wallet/entity tags on Etherscan-class explorers, fill missing exotic token prices and rebalance totals on those pages, and warn on sketchy sites (toolbar icon goes red/green) plus flag likely scam replies on X/Twitter. Open source. No tracking pitch. Companion to defillama.com TVL/yields data, not a replacement for Kerberus-style pre-sign simulation.