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Operational and cyber risks in the financial sector

Iñaki Aldasoro, Leonardo Gambacorta (), Paolo Giudici () and Thomas Leach

No 840, BIS Working Papers from Bank for International Settlements

Abstract: We use a unique cross-country dataset at the loss event level to document the evolution and characteristics of banks' operational risk. After a spike following the great financial crisis, operational losses have declined in recent years. The spike is largely accounted for by losses due to improper business practices in large banks that occurred in the run-up to the crisis but were recognised only later. Operational value-at-risk can vary substantially - from 6% to 12% of total gross income - depending on the method used. It takes, on average, more than a year for operational losses to be discovered and recognised in the books. However, there is significant heterogeneity across regions and event types. For instance, improper business practices and internal fraud events take longer to be discovered. Operational losses are not independent of macroeconomic conditions and regulatory characteristics. In particular, we show that credit booms and periods of excessively accommodative monetary policy are followed by larger operational losses. Better supervision, on the other hand, is associated with lower operational losses. We provide an estimate of losses due to cyber events, a subset of operational loss events. Cyber losses are a small fraction of total operational losses, but can account for a significant share of total operational value-at-risk.

Keywords: operational risks; financial institutions; cyber risks; time to discovery; value-at-risk (search for similar items in EconPapers)
JEL-codes: D5 D62 D82 G2 H41 (search for similar items in EconPapers)
Pages: 39 pages
Date: 2020-02
New Economics Papers: this item is included in nep-ban and nep-rmg
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