#Security

Revoke.cash is a wallet-hygiene and scam-protection stack: a web dashboard to inspect and revoke token approvals across 100+ networks, plus a browser extension (Revoke Sidekick) that warns before you sign. Started 2019. Core job is killing leftover ERC-20 / NFT / Permit2 allowances that let drainers pull funds without your seed. Extension now adds tx simulation, phishing/ad warnings, and address-poisoning flags (Fairside partnership). Free Lite tier; paid Standard / Premium / Ultimate for deeper coverage and auto-revoke. Preventative only. Cannot un-steal money already gone.

Pocket Universe is a browser extension that sits in front of your wallet and simulates Web3 transactions before you sign. Plain-English preview of what assets move, plus warnings on drainers, fake listings, honeypot NFTs, and sketchy approvals. Not a wallet. Never asks for your seed. Works with MetaMask and other browser wallets. Free to install. Monetized with ~0.8% fees on certain DEX/aggregator routes and optional Pro coverage (up to ~$30k per eligible loss, claim rules apply). Acquired by Kerberus in 2025. Desktop browsers only.

Scam Sniffer is a Chrome browser extension for Web3 scam defense. Two jobs: block or warn on phishing / drainer sites before you connect, and inspect signatures before you approve (Permit2, setApprovalForAll, NFT listings, blind eth_sign, balance-change simulation). Blocklist data is reused by big wallets and exchanges. Covers EVM plus Solana, Sui, BTC, TON, TRON drainers in marketing. Not a wallet. Never needs your seed. Premium is on by default (~0.25% on selected DEX trades); Free plan caps detections. Desktop Chrome-centric.

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.