Dev uses Claude to ban millions of IPs by ASN, stopping a 0.5Tbps-scale attack

basedjensen · x · 2026-10-17

Developer basedjensen shares that he stopped a 0.5Tbps-scale attack with a simple mitigation: blocking entire ASNs. He used Claude to generate and execute the banning of millions of IPs.

His takeaway: such mitigations are 'so simple' — knowing how packets get from A to B, combined with AI tooling, is enough to shut down large-scale attacks quickly.

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