Forta Firewall Expands Sanctions Screening with OFAC + 1-Hop Detection

As institutional adoption of crypto accelerates and the economy moves increasingly on-chain, compliance is no longer optional. At Forta, we’re building the infrastructure for institutional-grade compliant rollups. As part of Forta’s commitment to providing the infrastructure for institutional-grade secure and compliant rollups, it’s exciting to announce a major upgrade to Forta Firewall: sub-6 millisecond transaction screening of addresses one hop away from OFAC-sanctioned wallets.

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Forta Firewall already blocks addresses directly listed on the Specially Designated Nationals —SDN— OFAC list, as well as the UK and EU sanctions lists. This provides a strong compliance baseline, but sanctioned actors often attempt to evade detection by routing funds through intermediaries. These one-hop addresses can create indirect exposure and regulatory risk even though they aren’t yet formally listed.

With this new feature, Firewall automatically identifies and can block any address that has interacted with a sanctioned wallet within one transaction hop. The entire process runs in real time with ultra-low latency, ensuring that exposure is minimized without compromising transaction flow.

This expansion strengthens the role of Firewall as critical infrastructure for institutions bringing assets on-chain.

Forta Firewall at Work

Having already secured more than 400 million transactions since March across rollups and protocols, Forta Firewall offers pre-execution checks, flexible response actions (flag, log, block, alert), transparent and auditable risk decisions, and seamless integration with existing rollup stacks. Fully customizable, 

Firewall lets chains define their own screening criteria and enforcement logic; whether the objective is meeting regulatory requirements, protecting reputation, or managing internal risk, Firewall provides the infrastructure to operate securely and responsibly at scale.

Compliance as Infrastructure

The financial system is increasingly moving to blockchain rails and Compliance Screening is quickly becoming a core layer of secure blockchain infrastructure.

With these upgrades, Forta Firewall continues to set the standard for real-time, AI-powered compliance, ensuring that institutions can build safely on-chain.

‍Book a demo to explore how real-time transaction screening can boost your chain’s compliance.

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