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What is Wormhole?
6 min read · updated 25 May 2026
Wormhole is an interoperability protocol — infrastructure that lets different blockchains communicate. It connects Solana to 30+ chains, including Ethereum, its layer-2s, and many others. If Solana is an island, Wormhole is one of the main bridges to the mainland.
The problem: blockchains are isolated
Each blockchain is its own world. Solana can't natively see what's happening on Ethereum, and an asset on one chain can't simply appear on another. As the ecosystem fragmented across many chains, moving value and information between them became essential — and that's what interoperability protocols like Wormhole exist to do.
How it works
- Token bridging. The most common use: move assets between chains, e.g. bringing USDC or ETH from Ethereum to Solana. Classic bridging works by locking the asset on the source chain and minting a representation on the destination (and burning it to release the original on the way back). (See how to bridge to Solana.)
- Generic messaging. Wormhole's deeper capability is passing arbitrary data between chains, not just tokens. This powers cross-chain apps, governance, and oracle delivery — Pyth uses Wormhole to distribute price feeds across chains.
- Guardians. A set of "guardian" nodes observe and attest to messages between chains. This validator-style layer is central to how Wormhole works — and, historically, to its risk profile.
- W token. Wormhole's native token, used for governance.
Why bridge risk is the headline
Bridges hold enormous pooled value and are correspondingly the single most-attacked category in crypto. Wormhole itself suffered one of the largest exploits in DeFi history in February 2022 (roughly $320M), when an attacker forged the approval needed to mint wrapped assets. The hole was covered (notably by Jump, then a major backer) and the vulnerability patched, and Wormhole has since hardened significantly — but the episode is the canonical example of why bridges are uniquely dangerous.
Risks to keep in mind
- Bridges are high-value targets. A flaw in the messaging/guardian layer can be catastrophic in a way a single-chain bug usually isn't.
- Wrapped assets carry the bridge's risk. A bridged token is only as sound as the bridge backing it.
- Move only what you need, when you need it — don't leave large balances sitting in bridged form longer than necessary.
For the latest Wormhole news, see the Wormhole project page.
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