Blockchain Security, Demystified: 51% Attacks, Smart Contract Hacks, and the Myths That Mislead Us
If you’ve heard “blockchain is unhackable,” you’re not alone. It’s a comforting idea—and it’s also wrong. Blockchains power cryptocurrencies, NFTs, and decentralized apps, but attackers keep finding weak spots: majority (51%) attacks on small proof-of-work chains, smart contract bugs that drain treasuries, and cross-chain bridge exploits that move funds faster than an exchange withdrawal. Here’s…