Cyber Risk and the U.S. Financial System: A Pre-Mortem Analysis
50 Pages Posted: 23 Jan 2020 Last revised: 27 Apr 2022
Date Written: January 1, 2020
Abstract
We model how a cyber attack may be amplified through the U.S. financial system, focusing on the wholesale payments network. We estimate that the impairment of any of the five most active U.S. banks will result in significant spillovers to other banks, with 38 percent of the network affected on average. The impact varies and can be larger on particular days and geographies. When banks respond to uncertainty by liquidity hoarding, the potential impact in forgone payment activity is dramatic, reaching more than 2.5 times daily GDP. In a reverse stress test, interruptions originating from banks with less than $10 billion in assets are sufficient to impair a significant amount of the system. Additional risk emerges from third party providers, which connect otherwise unrelated banks, and from financial market utilities.
Keywords: cyber, banks, networks, payments
JEL Classification: G12, G21, G28
Suggested Citation: Suggested Citation