1. Never Reuse Passwords
Reusing passwords across platforms is a major security risk. If one site gets breached, all your accounts become vulnerable.
👉 Check if your credentials have been compromised
2. Use a Password Manager
Tools like 1Password or LastPass generate and store unique passwords for each account, eliminating the need to remember them.
3. Enable 2FA (Two-Factor Authentication)
Avoid SMS-based 2FA—opt for Google Authenticator or Authy instead. Disable multi-device sync in Authy after backup.
4. Hardware 2FA for High-Value Assets
Invest in hardware keys like Yubico or Google Titan for critical accounts requiring physical verification.
5. Switch to Cold Wallets
Hot wallets (e.g., MetaMask) are prone to hacks. Migrate assets to Ledger or Trezor cold wallets for offline security.
6. Remove Suspicious Chrome Extensions
Malicious extensions can steal data. Only install trusted plugins with minimal permissions.
7. Isolate Wallet Extensions
Create separate Chrome profiles for crypto wallets like MetaMask to prevent cross-extension vulnerabilities.
8. Limit Smart Contract Token Approvals
Never grant unlimited token access to smart contracts. Set caps to prevent drain attacks.
9. Avoid Address Exposure
Use exchanges (e.g., Binance) for frequent transfers to obscure your wallet activity.
10. Secure Your Mobile Device
Prevent SIM-swapping by enabling carrier PINs and avoiding SMS-based recovery.
👉 Advanced mobile security tips
11. Ignore Shady Ads
Phishing sites mimic legitimate platforms. Always verify URLs before clicking.
12. Beware of "Free" Airdrops
Unsolicited token offers (e.g., Discord DMs) are scams. Never share private keys or wallet access.
13. Never Open Unknown Files
Malware-laden attachments (e.g., .zip files) can install keyloggers. Always show file extensions.
14. Scrutinize Email Addresses
Check for typos (e.g., "Coingecko" vs. "Coinɡecko")—a common phishing tactic.
FAQ
Q: Is SMS 2FA safe?
A: No. SIM-swapping attacks make SMS-based 2FA risky. Use authenticator apps instead.
Q: How often should I review smart contract approvals?
A: Monthly. Revoke unused permissions via Etherscan or wallet dashboards.
Q: Can cold wallets be hacked?
A: Extremely unlikely if purchased new and seed phrases are stored offline.
For deeper insights, explore MyCrypto’s Security Guide.