White hat finds huge vulnerability in Ethereum–Arbitrum bridge: Wen max bounty?

The ethical exploiter thanked Arbitrium for the 400 ETH payday but said such a find should be eligible for the max bounty of nearly 1,500 ETH, or $2 million.
Source: White hat finds huge vulnerability in Ethereum–Arbitrum bridge: Wen max bounty? (https://cointelegraph.com/news/white-hat-finds-huge-vulnerability-in-eth-to-arbitrum-bridge-wen-max-bounty)
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