
Firewall is building the safety rails for the next era of the internet, focusing on creating safer blockspace for users and applications by embedding AI into blockchains to filter out exploits. Their core product, the Safe Sequencer, is a superfast, provably neutral processor instrumented with AI models to filter out smart contract exploits at block construction. This paradigm shift in blockchain security and architecture aims to protect users' assets and attract liquidity to rollups, upholding principles of decentralization, trustlessness, and transparency. The company leverages advancements in cryptography, machine learning, and pattern recognition to combat smart contract exploits.

Firewall is building the safety rails for the next era of the internet, focusing on creating safer blockspace for users and applications by embedding AI into blockchains to filter out exploits. Their core product, the Safe Sequencer, is a superfast, provably neutral processor instrumented with AI models to filter out smart contract exploits at block construction. This paradigm shift in blockchain security and architecture aims to protect users' assets and attract liquidity to rollups, upholding principles of decentralization, trustlessness, and transparency. The company leverages advancements in cryptography, machine learning, and pattern recognition to combat smart contract exploits.
Core product: Safe Sequencer — AI-instrumented sequencer that filters smart-contract exploits during block construction
Mission: Create Safe Blockspace to programmatically block on-chain theft while preserving decentralization
Founders: Devan Purhar and Sam Mitchell
Stage & raise: Pre-seed (~$3.7M) closed March 2024
Team size: ~16 employees
Blockchain security / smart-contract exploit prevention
2023
Cryptocurrency / Blockchain infrastructure
3700000.00
Round reported as approximately $3.7M; multiple investors reported including Breyer Capital, Hack VC, and North Island Ventures.
“Led or participated by institutional crypto/backing investors including Breyer Capital, Hack VC, and North Island Ventures”