为了您的安全，请勿篡改这些系统。

For your safety, never tamper with these systems.

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恐怖份子与黑客通过篡改华尔街电脑交易系统制造金融混乱，可以吗？

Could terrorists or hackers cause financial chaos by tampering with Wall Street's computerised trading systems?

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如果希望保证通过消息系统发送的文档在传递过程中没有被破坏或篡改，那么就要用到数字签名。

In the case of digital signatures, you might want to be sure that when you send a document through a messaging system it has not been corrupted or tampered with in the process.

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