Crypto Security Guides
By Twin · CoinHours Editorial · Maintained by CoinHours Editorial · Reviewed as the market evolves
Crypto is unique among asset classes in that security is overwhelmingly the user's responsibility. There is no chargeback, no fraud department, no insurance scheme that reverses a malicious transaction once it's been signed. The flip side of being able to hold a bearer asset that no government can confiscate is that operational mistakes — a leaked seed phrase, a malicious approval, a compromised device — can be unrecoverable.
These guides cover the full defensive stack: hardware wallet selection and setup, multi-signature configurations for larger holdings, seed-phrase backup strategies including metal plates and geographic distribution, exchange security hygiene (2FA, withdrawal whitelists, dedicated email), and the recurring scam patterns that account for the vast majority of investor losses — phishing, address poisoning, fake support, malicious token approvals, and SIM-swap attacks.
Most crypto investors who lose money do not lose it to price volatility — they lose it to a single avoidable operational mistake. The material here is designed to make sure you aren't one of them.
Key Takeaways
- •Self-custody is the default security model — exchanges are a counterparty risk, not a vault.
- •Hardware wallets isolate signing keys from internet-connected devices and are the standard for meaningful holdings.
- •Seed phrases should be backed up offline on durable media and stored in at least two separate locations.
- •Most losses come from social engineering and malicious approvals, not from technical exploits of the wallets themselves.
- •Treat phone numbers as insecure — use authenticator apps or hardware 2FA keys instead of SMS wherever possible.