#加密安全须知 # Complete Guide to Crypto Asset Security Protection

## One, Basic Security Principles

1. **Private Key Equals Asset**

- The private key is the only proof of control over crypto assets; losing it means losing assets permanently.

- Never share your private key/seed phrase in any form (including screenshots, emails, cloud storage)

2. **Decentralized Responsibility**

- Crypto transactions are irreversible; no customer service can help recover mistakenly operated assets

- All operations are ultimately the user's responsibility

## Two, Wallet Security

### Hot Wallet Protection

1. **Use well-known wallets** (e.g., MetaMask, Trust Wallet)

- Only download from official websites

- Check developer signatures and download counts

2. **Isolation Usage**

- Use small hot wallets for daily transactions

- Store large assets in cold wallets

- Use different wallet addresses for different purposes

### Cold Wallet Usage

1. **Hardware Wallet Choices** (Ledger/Trezor/Coldcard)

- Ensure purchasing channels are official or authorized dealers

- Must initialize and generate a new seed phrase upon first use

2. **Seed Phrase Custody**

- Write it on a fireproof and waterproof metal seed phrase board

- Diversify physical storage (do not keep everything in one location)

- Absolutely prohibit digital storage

## Three, Transaction Security

### Exchange Selection

1. **Compliance Check**

- Check if licensed (e.g., Coinbase holds NYDFS license)

- Is there proof of reserves disclosed?

2. **Security Settings**

- Enable two-factor authentication (2FA), preferably using an Authenticator app rather than SMS

- Set up withdrawal address whitelist

- Regularly change passwords (use a password manager to generate complex passwords)

### Transaction Process Protection

1. **Link Verification**

- Manually input official website domain to access

- Be wary of phishing websites (check SSL certificates and domain spelling)

2. **Contract Interaction**

- Use Etherscan to verify contract code

- First small test transaction

- Revoke unused authorizations (using tools like revoke.cash)

## Four, Network Protection

1. **Device Security**

- Use dedicated devices for encryption operations

- Keep systems and antivirus software updated

- Disable remote access software

2. **Network Environment**

- Do not operate assets on public WiFi

- Consider using a VPN

- Set DNS to trusted services like 8.8.8.8

## Five, Social Engineering Prevention

1. **Identify Scams**

- Be wary of 'official customer service' private messages (real customer service will not contact you proactively)

- There are no free lunches (airdrops and lotteries require extreme caution)

- Do not display QR codes/seed phrases in video conferences

2. **Information Isolation**

- Completely separate crypto social accounts from funding accounts

- Do not expose holdings and transaction information on social media

## Six, Emergency Preparedness

1. **Asset Backup**

- Multi-signature wallet configuration (e.g., 3/5 multisig)

- Share wallet information with trusted family members (in a secure manner)

2. **Escape Plan**

- Pre-set emergency freeze plans

- Keep a record of common exchange customer service contact information

3. **Insurance Options**

- Consider purchasing asset insurance (e.g., Coinbase Custody offers insurance)

- Confirm insurance terms when using custodial services

## Seven, Latest Threat Protection (2024 Special Reminder)

1. **AI Scam Upgrade**

- Be wary of AI-generated 'familiar' voice/video for borrowing money

- Establish family code words to verify identity

2. **Quantum Computing Defense**

- Long-term holders should consider quantum-resistant wallet solutions

- Pay attention to industry developments in post-quantum cryptography

3. **Cross-chain Bridge Risks**

- Use official cross-chain bridges (avoid third parties)

- Split cross-chain amounts into batches

## Security Self-Check List

✅ Is the seed phrase physically backed up and not digitized?

✅ Is 2FA enabled for all accounts?

✅ Have you checked smart contract permissions in the last 6 months?

✅ Is the exchange API key set to read-only permission?

✅ Has a family emergency plan been established?

Remember: In the crypto world, **only the paranoid survive**. Security is not a one-time task but a habit that needs to be continually maintained. When facing any operation, ask one more question: 'What is the worst-case scenario?' This mindset can help you avoid 99% of security traps.