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Security infrastructure firm Firewall raises $3.7 million in pre-seed funding

Quick Take

  • North Island Ventures, Breyer Capital and Hack VC co-led a $3.7 million pre-seed funding round for the blockchain security firm Firewall. 
  • Firewall will use the funds to grow its team of six employees, develop its tech and bolster community building and marketing endeavors.

Firewall, a blockchain security infrastructure firm, announced on Wednesday that it raised $3.7 million in a pre-seed round co-led by North Island Ventures, Breyer Capital and Hack VC.

As Firewall's first funding round, the money raised will be used to grow its current team of six full-time employees, develop its tech and bolster community building and marketing endeavors.

Firewall is developing a firewall solution for blockchain networks to prevent smart contract exploits. Unlike traditional network firewalls, which monitor incoming and outgoing transactions to identify threats using predefined security criteria, Firewall employs rollups — aggregating multiple transactions into a single batch — and "programmable transaction finalization rules" to intercept exploits before they are recorded on the blockchain. The "proof-of-exploit" consensus mechanism it is creating classifies smart contract exploits as “invalid state transitions” to be reversed.

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"Blockchain consensus is meant to formalize social consensus into programmatic rules. We know it's already a social consensus that smart contract exploits shouldn't be accepted as valid state transitions, you see this clearly after every exploit," the firm's co-founder Devan Purhar told The Block. "Do people refer to the Kyber 'transactions' that netted $50 million? No, instead it's the 'Kyber exploit,' synonymous with theft. That's why we're updating blockchain consensus to correctly reflect this mechanically."


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About Author

MK Manoylov has been a reporter for The Block since 2020 — joining just before bitcoin surpassed $20,000 for the first time. Since then, MK has written nearly 1,000 articles for the publication, covering any and all crypto news but with a penchant toward NFT, metaverse, web3 gaming, funding, crime, hack and crypto ecosystem stories. MK holds a graduate degree from New York University's Science, Health and Environmental Reporting Program (SHERP) and has also covered health topics for WebMD and Insider. You can follow MK on X @MManoylov and on LinkedIn.

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