Cyber Risk, Financial Stability and the Payments System

Cyber risk remains at the top of the list of risks to the financial system, and the financial system is well known as the primary target for hackers (see here, here and here). In response, financial institutions expend huge resources on protecting their information systems—by one estimate, well over $100 billion. Yet, private sector actions to prevent cyber losses fall short due to a glaring externality: since the damage is likely to spill over to other financial firms and to markets, individual firms cannot reap the full benefits of preventing cyber attacks.

To get a sense of the financial stability risks associated with cyber fragility, we need to understand the financial system in some detail. Unfortunately, financial networks are highly complex and vary significantly across markets and functions. They also evolve meaningfully over time. On top of these enormous challenges, assessing network vulnerabilities frequently requires institution- or transactions-level information that is normally not publicly available.

This brings us to the important recent work of Eisenbach, Kovner and Lee (EKL), who study the vulnerability of the U.S. large-value interbank payments system, Fedwire, to a cyber attack on one of the principal nodes of the payments network—namely, one of the top five banks. In this post, we highlight EKL’s analysis as a model for the assessment of cyber-driven network risks. We suggest how central bankers should react to a cyber attack on the payments system, and speculate about what is needed to prevent, as well as mitigate, cyber risks….

U.S. Monetary Policy Spillovers

Do changes in U.S. dollar interest rates have a material impact on financial conditions elsewhere in the world? The answer is a resounding yes (see the paper one of us presented at this month’s IMF Annual Research Conference). When the Federal Reserve eases, the result is a dramatic increase in financial system leverage in other countries. Not only that, but the impact is larger than that of domestic policy changes.

The outsized cross-border impact of U.S. monetary policy creates obvious challenges for policymakers abroad aiming to maintain financial stability. Governments in the countries most affected have few options to limit the risks created by cyclical changes in dollar interest rates. The available mix of prudential measures includes more stringent capital requirements, limits on foreign currency liabilities, and restrictions on cross-border capital flows. The alternative of trying to counter U.S. monetary stimulus through higher policy interest rates abroad may backfire….

Spillovers, spillbacks and policy coordination

Reserve Bank of India Governor Raghuram Rajan’s recent plea for increased coordination is merely the latest protest by emerging-market economy (EME) policymakers about the spillovers from advanced-economy (AE) monetary policy. Such complaints have been common since AE central banks first implemented unconventional policies in 2008. The most famous was Brazilian Finance Minister Guido Mantega’s September 2010 remark that “We’re in the midst of an international currency war.”

The targets of these comments—policymakers in Europe, Japan and the United States—responded that the world would be better off if their economies grew. A deeper recession in the advanced world was surely in no one’s interest. Extraordinary monetary policy easing was therefore justified by both domestic and global concerns. U.S. and European policymakers further defended their actions by saying that their mandate was to promote price stability and sustainable growth domestically, which required taking account of the external impact of their policies only insofar as they then fed back onto their own economies. That is, while spillovers per se were not their responsibility, spillbacks were.

Debates over the potential benefits from international policy coordination have a long history...

Déjà vu in emerging markets

For decades a number of emerging markets have been evolving into advanced economies. They have improved their financial systems, property rights, policy frameworks, and growth models. As it turns out, however, the evolution was going the other way, too: advanced economies were becoming more like emerging markets, too. Debt was accumulating on household, corporate and bank balance sheets. Booms in real estate and parts of the corporate sector added to financial vulnerability. And policymakers were inattentive to the risks or lacked consensus on how to address them...

It's a small world (after all)

Originally built for the 1964 New York World’s Fair, the “It’s a small world” exhibition re-opened at Disneyland two years later in 1966. At the time, the international monetary system was characterized by fixed exchange rates and widespread capital controls.

A half century later, global finance has been transformed so that exchange rates are now mostly flexible and cross-border capital mobility is generally high. As they say in Disneyland, it’s a small world after all...

Commentary

Money, Banking, and Financial Markets