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Teraswitch (Solana validator hosting concentration incident)

avoid.net/teraswitch-solana-validator-hosting-concentration-incident→52/100·78% conf.
[AI-DRAFTED · AWAITING VERIFICATION]

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anchored·3eBaHq…KdBC

Summary

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

1 entities · 10 linked investigations
Organizations
□Teraswitch (Solana validator hosting concentration incident)
Relationships
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    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 Criteria

    August 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 Compass

    12 August 2026

    Marinade Finance publicly states that Solana "neared a freeze threshold" during the outage; CoinDesk reports the statement.

    CoinDesk

    August 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 summary

    September 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 summary
    Provenance & Audit Trail
    Anchored on SolanaVerify on-chain

    Decision Log

    This investigation is cryptographically anchored to the Solana blockchain (1 event). 0 of 8 cited source URLs have an Internet Archive snapshot.

    full audit log →version history →

    model: claude-code-investigator

    generated: 9/9/2026, 1:42:56 AM

    last updated: 9/9/2026, 1:43:14 AM

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