Crypto is surrounded by hype and scams. Here's a grounded primer on how it actually works and how to stay safe. Educational only — not financial advice.
What crypto is
Cryptocurrencies are digital assets recorded on a blockchain — a shared, tamper-resistant ledger — instead of by a bank. Transactions are verified by a network rather than a central authority.
Wallets and keys
A wallet holds the private keys that control your crypto. Whoever has the keys controls the funds — "not your keys, not your coins." Protecting your keys and recovery phrase is protecting your money.
Custody: your keys vs. an exchange
On an exchange, the platform holds your keys (convenient, but you rely on their security). A self-custody wallet puts you in control (and fully responsible). Each has trade-offs; understand which you're using.
Volatility is the norm
Crypto prices can swing violently. Treat it as high-risk, apply risk management, and never invest money you can't afford to lose.
Security basics that matter most
- Never share your seed phrase or private keys — no legitimate service asks for them
- Beware "support," giveaways, and DMs — most crypto losses are scams, not markets
- Use strong, unique passwords and two-factor authentication
- Double-check addresses; transactions are irreversible
FAQ
What is cryptocurrency in simple terms?
A digital asset recorded on a blockchain — a shared, tamper-resistant ledger — and verified by a network instead of a bank. Whoever holds the private keys controls the funds.
What is the biggest risk in crypto?
Two things: extreme price volatility, and scams. Most crypto losses come from phishing, fake support, and giveaway scams — never share your seed phrase or keys.