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跨链桥已成行业最大安全隐患 为什么和怎么办
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本文来自 Chainalysis 继本周 Nomad 跨链桥被攻击后，Chainalysis 估计，今年到目前为止已有 20 亿美元的加密货币从跨链桥被黑客窃取，涉及 13 次攻击，针对跨链桥的攻击占被盗资金总额的 69%。 
这是对区块链技术信任度建立的重大威胁。随着越来越多的价值通过跨链桥流动，它们成为了对黑客更具吸引力的下手对象。跨链桥现在也是与朝鲜有关的黑客的首要目标，据我们估计，今年迄今为止，这些黑客已经窃取了大约价值 10 亿美元的加密货币，全部来自跨链桥和其他 DeFi 协议。 好消息是这些平台可以采取自我保护措施。在黑客攻击的情况下，他们可以利用区块链技术的透明度来调查资金流，并在理想情况下防止攻击者套现他们的非法所得。 什么是跨链桥协议？跨链桥目的是解决不同区块链之间的互操作性挑战。跨链桥协议允许用户将资产从一个区块链转到另一个区块链。例如， Wormhole 是一个跨链桥协议，允许用户在各种智能合约区块链（如 Solana 和以太坊）之间转移加密货币和 NFT。 虽然跨链桥的设计各不相同，但用户通常通过将资产中的资金发送到跨链桥协议来与跨链桥进行交互，然后这些资金被锁定在合约中，接着向用户发放协议跨链到链上同等资产的等价资金。在 Wormhole 的例子中，用户通常向协议发送 |
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