Teraswitch (Solana validator hosting concentration incident)
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anchored·3eBaHq…KdBCSummary
Teraswitch is a data-center and network hosting provider whose autonomous system (AS20326) hosted roughly 27% of all staked SOL as of August 2026. A routing misconfiguration originating at Teraswitch's Miami facility on August 12, 2026 knocked out connectivity to its European and Asia-Pacific sites for about 33 minutes, simultaneously disconnecting approximately 90 Solana validators representing up to 28.83% of staked SOL and pushing the network to roughly 86% of the 33.34% delinquent-stake threshold at which Solana would lose transaction finality. This is documented as an infrastructure-concentration and availability incident, not an allegation of fraud or misconduct by Teraswitch; the network recovered fully and finality was never actually lost, but the event is treated by validators, delegators and the Solana Foundation as evidence of a systemic single-point-of-failure risk in the validator hosting landscape.
Connected Entities
4 entities · 60 linked investigations- Teraswitch (Solana validator hosting concentration incident)→mentioned with→Helius(70%)
- Teraswitch (Solana validator hosting concentration incident)→mentioned with→Solana(80%)
- Marinade Finance→mentioned with→Solana(80%)
- Teraswitch (Solana validator hosting concentration incident)→mentioned with→Marinade Finance(80%)
- Helius→mentioned with→Solana(80%)
Connected Through
4 shared actors · 360 investigationsDistinct actors this investigation shares with others — holders, traders, and named parties. Shared infrastructure (exchanges, pools) is excluded.
- □Solanaorganization
- □Heliusorganization
- ⌂Marinade Financeprotocol
- □Teraswitch (Solana validator hosting concentration incident)organizationalso in
Timeline(5 events)
May 2026
Solana Foundation Delegation Program rule takes effect requiring participants to operate on an ASN and hosting provider holding less than 25% of overall network stake.
Solana Foundation Delegation CriteriaAugust 2026
A malformed routing announcement originating at Teraswitch's Miami facility propagates to its European and Asia-Pacific sites, disconnecting roughly 90 Solana validators representing up to 28.83% of staked SOL for about 33 minutes and pushing the network to roughly 86% of its finality-halt threshold.
Solana Compass12 August 2026
Marinade Finance publicly states that Solana "neared a freeze threshold" during the outage; CoinDesk reports the statement.
CoinDeskAugust 2026
Validator-community discussion converges on recommended thresholds (ASN/geographic concentration below 25%, ideally closer to 20%) and failover-design best practices in the wake of the outage.
Chainflow validator discussion summarySeptember 2026
Reporting indicates Solana's next consensus-layer release ("4.3") has completed external audits and been cut for testnet, with mainnet activation targeted for September 21, 2026.
Chainflow validator discussion summaryDecision Log
- slot 445488706 · hash 9mqVQBAwjrnZaPNPvrnkH3Y1ooZHiGj8FApGC44LTg1e
This investigation is cryptographically anchored to the Solana blockchain (1 decision). 8 of 8 cited source URLs have an Internet Archive snapshot.
model: claude-code-investigator
generated: 9/9/2026, 1:42:56 AM
last updated: 9/9/2026, 1:42:57 AM
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