Spider-Man battles Doctor Strange in a cross-chain bridge exploit, revealing vulnerabilities like signature forgery and replay attacks. Learn how single-validator systems and weak message hashing enable attackers to mint unbacked tokens, and secure bridges with EIP-712, multi-sig, and Chainlink CCIP.

Quicksilver exploits Ethereum’s mempool to launch a Sandwich Attack on Iron Man’s StarkSwap trade. Learn how MEV bots profit with front-run + back-run, and how commit–reveal, batch auctions, and private relays defend against it.

At TheSandF, we don’t just read stories about DeFi hacks - we practice them safely, learn the mechanics, and understand how to defend against them. This post invites you to dive into DeFiHackLabs, a Foundry-based collection of reproduced DeFi exploits, and turn theory into hands-on skills.