Euro Zone Banks Face Unseen Risks from Wars, Cyberattacks: ECB Stress Test

The European Central Bank (ECB) has conducted a stress test on euro zone banks to assess their foreign currency liquidity and resilience in the face of various risks. The 'reverse stress test' asked lenders to create their own scenarios, which would lower their Common Equity Tier 1 (CET1) ratio by 300 basis points. Military conflicts, supply chain disruptions, cyberattacks, economic sanctions, macroeconomic confidence effects, and political instability were among the top risks identified by banks.

The ECB found that while banks' liquidity positions generally remained above regulatory minimum requirements under the various scenarios, some banks may fall short of foreign currency liquidity requirements in case of acute stress. The ECB also noted that foreign currency liquidity was structurally tighter than expected and would be more pronounced for some banks, potentially leading to a below-100% minimum liquidity coverage ratio.

The ECB stressed that past crisis episodes suggest a close link between liquidity and funding distress and banks' solvency positions. In the scenario where risks are transmitted via the real economy, while financial markets act as a secondary channel, military conflicts have a particularly detrimental effect on agriculture, accommodation, and food services. Macroeconomic confidence effects and cyberattacks also have a significant impact on manufacturing and transport.