Guide

Crypto Payment Security — How to Protect Your Business From Theft and Fraud

Secure your crypto payment setup: wallet security, gateway selection, employee access controls, and the most common attack vectors merchants face.

Payyd TeamMarch 28, 202610 min read

Key Takeaways

Non-custodial gateways (BTCPay, Coinremitter) are inherently safer — no third party holds your funds
Use a hardware wallet (Ledger, Trezor) for receiving business payments over $10K
Never reuse addresses — most gateways generate unique addresses per transaction automatically
The #1 threat is phishing — fake gateway login pages and social engineering, not blockchain attacks
Enable 2FA on everything — gateway dashboard, wallet, email, exchange accounts

Gateway compromise — if your custodial gateway gets hacked, funds in their custody are at risk. Solution: use non-custodial gateways
Phishing attacks — fake gateway login pages steal your credentials. Solution: bookmark your gateway URL, enable 2FA, use hardware keys
Wallet key theft — malware stealing your seed phrase or private key. Solution: hardware wallet, never store seed digitally
Address substitution — malware replaces your receiving address with an attacker's. Solution: verify addresses on a hardware wallet screen
Underpayment scams — customers send less than the invoiced amount. Solution: use gateway's payment verification (all major gateways handle this)

Use a non-custodial wallet for receiving payments — Ledger, Trezor, or at minimum MetaMask/Phantom
Enable 2FA on your gateway dashboard, wallet, and associated email
Choose a non-custodial gateway — eliminates counterparty risk entirely
Never store seed phrases digitally — write on paper, engrave on metal, store in a safe
Use separate wallets for receiving payments vs cold storage
Verify addresses on your hardware wallet screen before configuring in gateway
Whitelist withdrawal addresses if your gateway supports it (NOWPayments, BitPay do)
Monitor transactions — set up alerts for payments above a threshold