Simple and Practical Security Strategies

1. Building a Strong Identity Defense

• Password Management Tips: Use password managers such as 1Password or Bitwarden to generate and store complex passwords. Always enable Two-Factor Authentication (2FA) for an added layer of protection.
  Case 1: Massive Social Media Data Breach Due to Weak Passwords
  In September 2024, a social media platform suffered a breach involving 150 million accounts because many users used weak passwords like “password123.” Hackers leveraged credential-stuffing attacks to further compromise linked bank accounts.

• Prioritize Hardware Wallets: Opt for hardware wallets such as Ledger Nano X or Trezor Model T to store crypto assets. Avoid using internet-connected (hot) wallets when possible.
  Case 2: Hot Wallet Private Key Leak
  In August 2024, a user of a crypto exchange stored 500 BTC in a browser extension wallet. The private key was stolen by a trojan, leading to the complete theft of the assets.

• Mnemonic Phrase Storage Rules: Adopt the “24-word phrase + handwritten backup + offline storage” method. Never take photos of your mnemonic phrase or back it to the cloud.
  Case 3: Cloud Storage of Mnemonic Phrase Leads to Loss
  In January 2025, a user stored their mnemonic phrase in iCloud. After the account was compromised, $3 million worth of crypto assets were transferred.

2. Building an Impenetrable Wall for Device Security

• The importance of system updates: Set your phone and computer to update systems and applications automatically.
  Case 4: Ransomware outbreak caused by failure to update the system
  In March 2024, the Conti ransomware attacked a logistics company due to not installing the Windows SMB vulnerability patch in time. Data on 1,200 servers was encrypted, and the system was only restored after a $4.5 million ransom was paid.

• Anti-phishing browser configuration: Install anti-phishing extensions such as MetaMask Snaps on Chrome/Firefox, and enable the “Phishing Site Detection” feature. Additional note on the Snaps directory: MetaMask officially provides a dedicated Snaps directory (https://snaps.metamask.io), where users can browse and install Snaps plugins developed by the community.
  Case 5: Phishing website disguised as MetaMask
  In December 2024, a phishing website cloned the MetaMask interface to trick users into revealing their private keys, stealing over $2 million worth of crypto assets in a single day.

3. Identifying Cryptocurrency Phishing Traps

• Distinguishing genuine emails: Carefully check the sender’s email address. For example, “service@bank.com” and “service@bank-secure.com” may differ subtly.
  Case 6: Phishing attack disguised as Amazon
  In January 2025, a user of an e-commerce platform received a fake “Amazon Order Issue” email. After clicking the link, they were lured into entering credit card information, resulting in over $2 million in fraudulent charges in a single day.

• Double verification before transactions: Confirm the recipient address through official channels. Be alert for similar addresses that start with “0x” but differ slightly in the middle.
  Case 7: Address confusion scam
  In March 2025, a user mistakenly transferred USDC to the address “0x4a8…123” (which differed from the correct address by just one character), resulting in an unrecoverable loss of $500,000 in assets.

4.Effective Implementation of Data Encryption

• Wallet file encryption protection: Encrypt keystore files with a strong password. It is recommended to use Bitwarden to generate and store a random password of 16 characters or more.
  Case 8: Unencrypted wallet file leak
  In June 2024, a user saved an unencrypted wallet file on a shared hard drive. A colleague accidentally uploaded it to the cloud, resulting in a private key leak.

5.Security Assurance for Mobile Payments

• Cold wallet emergency plan: Install a cold wallet application on your mobile device, connect to the internet only during transactions, and keep it offline during regular use.
  Case 9: Mobile virus attack on hot wallet
  In October 2024, a user’s phone was infected with malware, leading to the theft of 200 ETH from a hot wallet on a crypto exchange.

• Security check of payment environment: When using a digital payment wallet, ensure operations are conducted in a secure network environment.
  Case 10: Payment theft under public WiFi
  In December 2024, a user made a mobile payment using free WiFi at an airport. A man-in-the-middle attack intercepted the payment information, leading to a theft of $50,000 within three hours.

6.Enhanced Measures for On-Chain Privacy Protection

• Proper use of transaction mixers: Use coin mixing tools such as Wasabi Wallet to obscure fund flows and prevent large transactions from exposing personal addresses.
  Case 11: Asset tracking due to on-chain data analysis
  In February 2025, a whale user did not use a coin mixer, and their DeFi operation patterns were publicly exposed by an on-chain analysis platform, triggering a price manipulation attack.

7.Avoid Leaving Personal Privacy Information Everywhere

• Do not leave personal privacy information on various websites: Many websites have varying levels of security. If these sites are hacked, your stored personal information—such as name, contact details, ID number, and even financial information—may be leaked, leading to numerous troubles or even financial loss.
  Case 12: Precision scams triggered by privacy data leaks
  In October 2024, a user filled in their name, phone number, ID number, and home address on several small, unknown sweepstakes websites. Shortly after, the user began receiving frequent scam calls. The scammers accurately cited their personal information, used various tactics to extract valuable details, and lured the user into transferring money for different fabricated reasons. Due to the wide scope of the information leak, the user couldn’t identify the exact source, and ultimately lost tens of thousands of yuan by trusting the fraudulent messages.

A Final Word on Security

Dear crypto investors and Web3 users, in this golden age of digital assets, every action you take could become a target for hackers. Even seemingly minor security lapses can lead to catastrophic consequences. Security is not optional—it is a mandatory responsibility. As long as you stay vigilant and take proper precautions, security will accompany you on your journey.

When tempted by “high-yield DeFi projects” or “free NFT airdrops,” remember the rule: there’s no such thing as a free lunch. If you detect any suspicious transactions, immediately freeze your funds via the appropriate crypto platforms and contact a blockchain security firm for assistance in tracking the activity. The future of Web3 belongs to those who remain cautious—may your digital assets grow safely in a secure harbor. Never click on links in social media DMs, never disclose your seed phrase to anyone, never conduct crypto transactions on public devices, and always be alert to impersonators claiming to be official platform representatives. These four golden rules can help you fend off over 90% of potential risks.