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

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.