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June 2026 Cross-Chain Bridge Exploit ($127M, Three Protocols)

avoid.net/june-2026-cross-chain-bridge-exploit-127m-three-protocols→10/100·18% conf.
[VERIFIED]

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anchored·4YjQCk…jF26

Summary

An alleged coordinated cross-chain bridge exploit on June 14, 2026 is described as draining $127 million from three DeFi protocols — identified only as BridgeLink, CrossFlow, and Relay Protocol — across Ethereum, Arbitrum, and Polygon in under 12 minutes. This specific incident, including the protocol names, the $127M figure, and the 03:42 UTC timestamp, cannot be independently verified through any Tier 1 or Tier 2 source as of June 30, 2026; the sole primary source is a blog post by Nadcab Labs, an Indian blockchain development services company with a commercial interest in publishing DeFi security content. While a severe pattern of verified cross-chain bridge exploits across 2026 provides real context, the specific claims in this investigation request should be treated as unverified until corroborated by credible on-chain analysis or major news coverage.

Connected Entities

23 entities · 59 linked investigations
Organizations
□Adshares Bridge (ADS)28□Kelp18□Hyperbridge32□Polygon54□Ethereum□THORChain□IoTeX□Phemex□Taiko Ethereum L2 Bridge Exploit□Arbitrum□KelpDAO / LayerZero Bridge Exploit (April 2026) — DPRK Lazarus□Wintermute□Gravity Bridge□Wormhole□Wormhole Bridge□CrossCurve□Alephium□Taiko□Optimism
Protocols
⌂LayerZero — DVN Single-Verifier Configuration Risk
Tokens
♦Syscoin Bridge♦June 2026 Cross-Chain Bridge Exploit ($127M, Three Protocols)♦Syscoin
Relationships
  • Taiko Ethereum L2 Bridge Exploit→mentioned with→Ethereum(80%)
  • Syscoin→mentioned with→Ethereum(65%)
  • Syscoin→mentioned with→Hyperbridge(60%)
  • Taiko Ethereum L2 Bridge Exploit→mentioned with→Taiko(70%)
  • Wintermute→mentioned with→Ethereum(70%)
  • Gravity Bridge→mentioned with→Ethereum(80%)
  • Gravity Bridge→mentioned with→Kelp(65%)
  • Taiko→mentioned with→Wintermute(60%)
  • Optimism→mentioned with→Arbitrum(65%)
  • Taiko→mentioned with→Ethereum(80%)
  • + 76 more
Also appears in
Kelp·18Hyperbridge·32Polygon·54LayerZero Protocol·55CrossCurve Bridge·28Hyperbridge (Polkadot-Ethereum Bridge)·38Spark Protocol·62Adshares Bridge (ADS)·28Aave·74H1 2026 Crypto Hack Landscape — AI Agent Attack Vector Emerges·0

Connected Through

22 shared actors · 619 investigations

Distinct actors this investigation shares with others — holders, traders, and named parties. Shared infrastructure (exchanges, pools) is excluded.

Have evidence about June 2026 Cross-Chain Bridge Exploit ($127M, Three Protocols)?

Timeline(9 events)

2 February 2022

Wormhole bridge hack: approximately 120,000 wETH (~$320-325M) stolen via signature verification bypass. This is the actual 'Wormhole incident' referenced in the investigation context — it did not occur in 2026.

Elliptic / Chainalysis

19 April 2026

Kelp DAO exploited for approximately $292M via forged LayerZero cross-chain message. Largest verified bridge exploit of 2026 to date.

CoinDesk

18 May 2026

Verus-Ethereum bridge exploited for approximately $11.4M via missing source-amount validation in Solidity bridge logic.

CoinDesk

31 May 2026

14 verified bridge exploits in 2026 documented through this date totaling approximately $340.7M per CoinGabbar count.

CoinGabbar

9 June 2026

Humanity Protocol: private key malware attack drains approximately $30-36M from Hyperlane bridge ProxyAdmin on Ethereum; H token crashes 80-90%.

CoinDesk

14 June 2026

Alleged coordinated exploit at 03:42 UTC drains $127M from BridgeLink ($52M), CrossFlow ($48M), and Relay Protocol ($27M) across Ethereum, Arbitrum, and Polygon. This event is asserted by Nadcab Labs but is unverified by any independent Tier 1 or Tier 2 source.

Nadcab Labs (unverified; Tier 3 only)

17 June 2026

Nadcab Labs publishes blog post describing the alleged $127M exploit. No corroborating coverage identified from any independent outlet at or after this date.

Nadcab Labs

22 June 2026

Taiko Ethereum L2 bridge exploit: leaked SGX signing key on GitHub enables $1.7M in forged withdrawal proofs; Taiko halts block production.

CoinDesk

25 June 2026

Taiko announces full restoration of bridge backing following the $1.7M SGX exploit.

CryptoTimes
Provenance & Audit Trail
Anchored on SolanaVerify on-chain17 Wayback Archives

Decision Log

This investigation is cryptographically anchored to the Solana blockchain (3 events). 17 of 19 cited source URLs have an Internet Archive snapshot.

full audit log →version history →

model: claude-sonnet-4-6

generated: 6/30/2026, 12:06:00 PM

last updated: 9/20/2026, 9:09:25 PM

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