Three DeFi bridge exploits drained nearly $18 million in a single day as BitMine approaches 5% of Ethereum's circulating supply through its MAVAN validator network. ETH gains 1.7% amid broader tech-sector strength, but structural risks in DeFi and validator concentration demand close attention.
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BitMine now holds five point seven eight million ETH, representing four point eight percent of Ethereum's circulating supply, and the company has publicly stated it's targeting five percent. That's not a rounding error.
Against that institutional backdrop, the past twenty-four hours delivered a reminder of how fragile the DeFi layer beneath that accumulation actually is. Three separate exploits.
The third failure isn't a bridge exploit in the same technical sense, but it may carry the longest-term signal. SummerFi, one of DeFi's most established user-facing interfaces, announced its shutdown following a six million dollar breach of its Lazy Summer Protocol on July sixth.
ETH opened July twenty-first at one thousand nine hundred and three dollars and moved to one thousand nine hundred and thirty-six by mid-morning in New York. A one point seven percent gain.
Two things deserve close attention in the sessions ahead. The first is BitMine's approach to the five percent threshold.
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