The Best BlockSec Alternatives in 2026

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

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

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

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.

Web3 Antivirus offers browser and wallet security tools, a security API, wallet risk analysis, and monitoring for phishing and poisoning attacks.

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

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

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

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

TRM Labs provides blockchain intelligence for investigating illicit activity, managing risk, preventing fraud, and securing protocols.

Cyfrin provides blockchain security audits, developer courses, and security research for protocols, institutions, and engineers.

Coinmerce Capital presents managed crypto investment funds including Core, Frontier, and Yield.

Chainalysis provides blockchain data and intelligence tools for investigating illicit activity, managing risk, and preventing crypto fraud.

Sigma Prime audits smart contracts, zero-knowledge systems, blockchain infrastructure, and off-chain code, and publishes security research.

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

EverRise develops bridging and security applications for DeFi protocols across BNB Chain, Ethereum, Polygon, Fantom, and Avalanche.

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

Immunefi connects crypto projects with security researchers through smart contract and crypto bug bounty programs.

Kryptos combines crypto portfolio tracking and tax filing with tools to build financial products across 5,500+ integrations.

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

K3 Capital manages non-directional DeFi strategies such as interest-rate arbitrage, liquidity provision, and early protocol participation.

Re7 Labs advises DeFi protocols and curates on-chain risk, using research and in-house tooling across digital asset ecosystems.