bounties
HackerOne & Bugcrowd Crypto Programs
Platform: HackerOne · Chain: Multi-chain
Deadline
Ongoing
Crypto-focused bug bounty programs on HackerOne and Bugcrowd covering SDKs, APIs, and infrastructure. Notable May 2026 programs: Ledger Donjon (firmware/hardware), GitHub Security Lab (up to $100K), OpenAI ChatGPT ($200–$20K). Broader scope than pure DeFi bounties — accessible to web security researchers.
💰 Reward Estimate
$100–$100K+ per finding
Score: 8/10
⚡ Effort Level
Security research (medium–expert)
Score: 7/10
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