The Best Web3 Antivirus Alternatives in 2026

Sherlock offers Web3 security audits, contests, AI analysis, and bug bounties for smart contract projects.

Blockaid provides real-time Web3 security tools for preventing scams, fraud, exploits, and compliance risks across on-chain finance.

CertiK combines formal verification, security audits, and monitoring tools to assess smart contracts and blockchain protocols.

BlockSec combines crypto compliance and security tools for screening illicit fund flows, auditing contracts, and monitoring DeFi protocols.

Quantstamp audits smart contracts, layer-one networks, and web infrastructure, and reports blockchain security work dating back to 2017.

Wallet Guard was an open-source browser extension for detecting crypto scams and wallet drainers; its site says the service ended in March 2025.

Elliptic provides crypto compliance software to screen, monitor, and investigate on-chain financial risk for banks, exchanges, and governments.

Three Sigma audits blockchain code and DeFi systems, reporting security findings and services for Web3 projects.

BlockSec Phalcon detects blockchain attacks and sends alerts to protocols, liquidity providers, traders, chains, and exchanges.

Hacken provides blockchain security and compliance services, including audits, penetration testing, threat monitoring, and proof-of-reserves work.

OtterSec audits blockchain systems, including layer-one networks, wallets, DeFi protocols, bridges, and related infrastructure.

CoinStats tracks crypto portfolios across coins, exchanges, wallets, and blockchains, with tools to buy, swap, and stake assets.

Revoke.cash helps inspect and remove token approvals and wallet permissions across Ethereum and more than 100 networks.

InstaDapp develops DeFi tools, including the Fluid protocol and Avocado wallet for account and smart contract transactions.

Each Ethernaut level requires hacking a smart contract in the Ethereum Virtual Machine through a Web3 and Solidity wargame.

RockawayX invests in Web3 ventures and provides blockchain infrastructure, liquidity, and engineering support for protocols and founders.

Blockhead tracks crypto, DeFi, and web3 portfolios across blockchain accounts, alongside a cross-EVM block explorer and dapp directory.

B.Protocol Curator tracks data associated with B.Protocol's backstop pools for monitoring.

Hexens audits blockchain systems and offers continuous threat exposure monitoring, alongside research on smart contract platform vulnerabilities.

Splunk for Blockchain helps monitor blockchain systems by collecting and analyzing onchain and offchain data.

Hypernative monitors digital assets for threats and supports real-time detection, response, and fraud prevention.

Tulipa Capital curates DeFi risk strategies and provides dashboards and partner information for its on-chain finance work.

Nexus Mutual offers crypto cover for risks including hacks and describes itself as an alternative to insurance.

AlphaPing operates non-custodial on-chain credit vaults with defined risk constraints, verifiable accounting, and liquidity rules.