Blockaid

Blockaid was founded in 2022 by Ido Ben-Natan (CEO) and Raz Niv (CTO), who met during their military service in Israel's Unit 8200 cyber intelligence corps and later served together as Cyber Security R&D Team Leads at the Office of the Prime Minister of Israel, where their team won the Israel Defense Prize for a technical achievement. Drawing on that nation-state-cybersecurity background, they set out to apply adversarial, intelligence-grade threat detection to the wide-open attack surface of Web3, where wallet drainers, phishing, malicious dApps, and state-sponsored hacking groups were causing billions of dollars in losses annually and where transactions, once signed, cannot be reversed.

The company built a platform that ingests and correlates onchain data (transaction simulation, address/token/dApp scanning, clustering of malicious bytecode and behavior patterns) with offchain signals (most Web3 fraud originates on the web2 surface -- phishing sites, compromised domains, social engineering) to detect and block malicious transactions before they are signed or executed. Blockaid operates what it calls a 'Customer Data Network': direct integrations with the majority of major Web3 wallets and dApps give it visibility into a very large share of onchain transaction flow, which in turn improves detection accuracy in a data flywheel.

Blockaid emerged from stealth on October 5, 2023, disclosing $33M in combined seed and Series A funding from Ribbit Capital, Variant, Cyberstarts (its first seed investor), Sequoia Capital, and Greylock, and announcing early customers/integrations including MetaMask, OpenSea, Rainbow, and Zerion. The Series A itself was reported at $27M (October 2023), co-led by Ribbit Capital and Variant with Greylock, Sequoia and Cyberstarts participating. Growth accelerated quickly: by early 2025 the company had grown roughly tenfold year-over-year, expanding from about 20 to about 70 employees (with plans to roughly double headcount again by end of 2025), and had integrated with a large share of leading wallets, exchanges and chains, including Coinbase, MetaMask/Consensys, Uniswap, Starknet, Safe, Immutable, OpenSea, Zerion, Avalanche/Core, and Backpack.

Business model

B2B SaaS / API and SDK licensing to Web3 companies (wallets, exchanges, chains, DeFi protocols, custodians) who embed Blockaid's threat-detection and transaction-security engine into their own products; also sells directly to institutions (asset managers, trading firms, banks) for compliance and operational security.

Enterprise/usage-based subscription and API licensing (transaction/address/token scanning volume-based pricing is typical in this segment; not publicly disclosed by Blockaid).