Blockchain security attack and defense: Multi-signature and isolated storage strategies to prevent hacker attacks

The recent incident of Bybit funds stolen has attracted widespread attention from the industry. Hackers stole a large number of Ethereum assets by manipulating cold money packages and smart contract vulnerabilities. This incident not only exposed the security vulnerabilities of some exchanges in the storage and trading processes, but also reflected the risks faced by the overall crypto ecosystem. As a centralized storage and circulation platform for digital assets, the security of the exchange is directly related to user asset security and market confidence.

Blockchain security attack and defense: Multi-signature and isolation storage strategies for preventing hacker attacks

Multi-signature technology

Multi-signature technology

Multi-support Multi-Signature technology requires that transactions must be signed by multiple keys to take effect, so that even if a certain key is leaked, the attacker cannot transfer funds separately.
• • Application suggestions:
  • Use a multi-signature scheme of 2/3 or higher for key assets;
  Distribute the signature keys in different physical locations and In the system, avoid the risk of centralization.

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• Ou Yi OKX

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Binance Binance:

• Binance Binance:
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• APP:

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Gateio Sesame Door Open:

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• APP: [adid]ea5d2f1c4608232e07d3aa3d998e5135[/ad id]

Bitget:

• Official website :

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APP:
• [adid]3295c76acbf4caaed33c36b1b5fc2cb1[/adid]

Isolation Storage Strategy

Isolation Storage is about to be strictly managed separately from hot and cold money packages to reduce the risks brought by online environment exposure.

• Implementation method:
  • Only a small amount of working capital is placed in a hot wallet, and the remaining large amounts of funds are stored in a cold wallet with physical isolation;
  • Regulate regularly Funds in hot wallets are transferred to cold wallets, while key protection is enhanced using hardware security modules (HSMs).

Overall architecture suggestions

• Technical integration: combine multi-signature and isolated storage to build a layered protection system;
• Monitoring System: Monitor changes in each wallet funds in real time and set up an automatic alarm mechanism;
• Emergency plan: formulate detailed emergency plan. Once abnormalities are found, the relevant operations will be suspended immediately and the investigation procedures will be initiated.

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