The Propagation of Cyberattacks through the Financial System: Evidence from an Actual Event
研究了一次持续多日的网络攻击对银行系统的影响，发现业务连续性计划能减少一半以上的损失，大银行表现更好，且攻击通过传染导致未直接受影响的银行出现流动性短缺。
ABSTRACT This article quantifies the effects of a multiday cyberattack that forced offline a technology service provider (TSP) to the banking sector. The attack impaired customers’ ability to send payments through the TSP, but the business continuity plans of banks and the TSP reduced the effect by more than half. Large banks performed better. Through contagion, banks not directly exposed to the attack experienced a liquidity shortfall, causing them to borrow funds or tap reserves. The ability to send payments after hours helped avoid further contagion. These results highlight the importance of preparedness by the private and official sector for cyberattacks.