Learning guide

Wallet Safety and On-Chain Security

Learn wallet, seed phrase, hardware wallet, phishing, multisig, and contract approval terminology.

Updated 2026-06-02

Wallet terms are about control

A wallet manages keys and signs transactions. The most important wallet vocabulary is about control: who can sign, how keys are stored, and what happens if recovery information is lost or exposed.

A seed phrase is not a password reset link. It can restore control over a wallet, which means it must be treated as highly sensitive information.

Approvals and permissions

A contract approval can let an application move tokens within a defined permission. Some approvals are narrow; others are broad. Understanding approvals helps users recognize why a transaction prompt matters before signing.

Security terms such as key rotation, multisig, timelock, and emergency pause describe ways teams try to reduce operational risk.

Common attack vocabulary

Phishing attempts to trick users into revealing credentials, seed phrases, or signing harmful transactions. Reentrancy, oracle manipulation, and access-control bugs describe more technical smart-contract risks.

Learning the terms does not remove risk, but it makes warnings, audits, and incident reports easier to read.

How this appears in the game

Wallet and security cards often group by custody, permissions, incident response, or smart-contract vulnerability. If four terms all describe how control can be protected or lost, they likely share a category.

Crypto Term Game never asks for wallet information and never provides transaction instructions.

Educational vocabulary only. This guide does not provide investment, tax, legal, or trading advice.