web3: Crypto hacker attacks in July result in losses of $247 million
Coinpaper
54m ago
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In July, crypto hackers caused losses of approximately $247.4 million, with Coldcard, Ostium, Bonzo Lend and several cross-chain bridges being affected.
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DeFiLlama 数据显示,7 月加密行业因黑客攻击损失约 2.474 亿美元,较 6 月的约 7500 万美元明显上升,也高于 5 月的约 6000 万美元。按年内数据看,7 月是 2026 年迄今损失第二高的月份,仅次于 4 月。

Coldcard占当月近半损失

7 月最大单一事件来自硬件钱包 Coldcard。Galaxy Research 统计称,至少三轮已确认攻击波及约 7300 个比特币钱包,被盗 BTC 超过 1 亿美元;若计入疑似第四轮,损失可能接近 1.3 亿美元。DeFiLlama 目前对该事件的估算约为 1.15 亿美元。

按这一口径计算,Coldcard 一项就占到 7 月全部被盗金额的约 46%。报道提到,问题与部分版本生成钱包恢复信息的方式有关。这也显示,冷存储虽能降低在线攻击风险,但并不能完全隔绝硬件或固件层面的漏洞。

Ostium与Bonzo Lend接连受损

去中心化交易平台 Ostium 在 7 月也遭遇重创,损失约 2375 万美元。攻击者入侵其链下价格基础设施,提交伪造价格报告,并据此构造异常盈利交易,从流动性提供者金库中获利。Ostium 表示,交易者抵押资产为独立存放,未受影响。

Hedera 生态借贷协议 Bonzo Lend 则在 7 月 11 日损失约 900 万美元。攻击者利用第三方预言机验证系统漏洞,操纵 SAUCE 价格,抬高抵押品估值后超额借出资产。Bonzo 随后表示,受影响用户仓位将通过由 Hedera Foundation 支持的恢复机制处理。

热钱包与跨链桥仍是高风险环节

加密支付公司 Triple-A 在 7 月下旬遭遇热钱包未授权访问,涉及多条区块链,初步损失约 970 万美元。DeFiLlama 将其归类为热钱包被攻破事件。该公司称,客户资金为独立保管,未受波及。

  • Verus-Ethereum Bridge 于 7 月 22 日损失约 753 万美元
  • Wanchain 在前一日因签名相关漏洞损失约 650 万美元
  • Allbridge Core 也出现约 165 万美元损失

此外,7 月还有多起规模较小的事件,包括 Crypto DAO 约 820 万美元损失,以及多起预言机和流动性操纵攻击。

值得注意的是,Cardano 钱包 SecondFi 虽在多份 7 月安全汇总中被提及,损失约 240 万至 260 万美元,但其自身时间线显示,主要攻击发生在 6 月 21 日至 23 日,7 月更多是善后、恢复与关闭服务阶段。

整体来看,7 月的攻击面已不再局限于智能合约本身。私钥管理、硬件钱包、预言机、跨链桥和运营系统,都在继续成为黑客造成大额损失的入口。

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