Wormhole: Cross-Chain Messaging for All Blockchains
+140 XP · 12 min read · Updated March 2026
What is Wormhole?
Wormhole is a generic cross-chain messaging protocol connecting 30+ blockchains including Ethereum, Solana, Sui, Aptos, Cosmos, and all major EVM chains. Originally built as a token bridge, it evolved into a full messaging infrastructure. 19 Guardian nodes (run by top validators like Everstake, Figment, P2P) observe and sign messages using a 2/3 supermajority threshold. Wormhole V2 introduced Native Token Transfers (NTT) — letting protocols move tokens without wrapped assets.
Key Products
Historical Context: The $320M Hack
In February 2022, Wormhole suffered a $320M exploit on its Solana bridge — the second largest hack in DeFi history. A smart contract bug let an attacker forge fake Guardian signatures to mint 120,000 wETH on Solana without depositing ETH. Jump Crypto (then backing Wormhole) immediately injected $320M to make users whole. The protocol has since undergone multiple audits and implemented defense-in-depth measures. The current codebase is substantially different from the exploited version.