On August 12, a routing error at hosting provider Teraswitch took offline 28.83% of staked SOL on Solana, just under five points from the critical 33.34% threshold that blocks transaction finalization. Autonomous System AS20326, which concentrated 118.9 million SOL representing 27.34% of total stake, lost 94% of its capacity simultaneously. About 90 validators were disconnected for 33 minutes, resulting in estimated losses of 333 SOL, approximately $25,000. Despite this, Solana continued producing blocks and processing transactions, with 597 out of 699 validators continuing to operate. Marinade Finance plans to review its concentration limits by ASN, data center, and failover system.
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