What is blockchain security?

What Is Blockchain Security?

Blockchain security refers to how the network stays honest: cryptography (signatures, hashes) and consensus (miners or validators agreeing on the chain). The ledger is hard to alter once confirmed. Your main risk is not the blockchain itself but your keys and wallet. If your private key is stolen, the security of the chain does not help you. So focus on securing your keys, using trusted wallets, and avoiding phishing and scams.