We develop a novel firm-level measure of cybersecurity risk using textual analysis of cybersecurity-risk disclosures in corporate filings. The measure successfully identifies firms extensively discussing cybersecurity risk in their 10-K, displays intuitive relations with quantitative measures of...

This paper provides some comprehensive evidence on the effects of cyber-attacks on the returns, realized volatility and trading volume of five of the main cryptocurrencies (Bitcoin, Ethereum, Litecoin, XRP and Stellar) in 99 developed and developing countries. More specifically, it investigates...

This paper uses a Markov-switching non-linear specification to analyse the effects of cyber attacks on returns in the case of four cryptocurrencies (Bitcoin, Ethernam, Litecoin and Stellar) over the period 8/8/2015 - 28/2/2019. The analysis considers both cyber attacks in general and those...

This paper examines mean and volatility spillovers between three major cryptocurrencies (Bitcoin, Litecoin and Ethereum) and the role played by cyber attacks. Specifically, trivariate GARCH-BEKK models are estimated which include suitably defined dummies corresponding to different types, targets...

We propose a taxonomy of cybercrime on the Ethereum blockchain and examine how cybercrime impacts victims' risk-taking and returns. Our difference-in-differences analysis of a sample of victims and matched non-victims suggests that victims increase their long-term total risk-taking and earn...

Violence in Mexico has reached unprecedented levels in recent times. After the government began a crackdown on drug cartels, nation-wide homicides almost tripled between 2006 and 2010. Using rich longitudinal plant-level data, this paper studies the impact of violent conflict on firms,...

This paper questions the widely applied parallelism of demographic and economic development in characterizing urban shrinkage in Germany, and argues that the usage of population change as a single indicator leads to incorrect policy recommendations for combating urban shrinkage. As the cases of...

Weimar achieved urban recovery as a "consumer city" with sub-brandings like a population magnet with a high living-quality, a cultural city with touristic attractions, and a university city. Its intensive cultural promotion policies combined with urban regeneration programs have contributed to...

Digital products have the property that they can be copied almost costlessly. This makes them candidates for non-commercial copying by final consumers. Because the copy of a copy typically does not deteriorate in quality, copying products can become a wide-spread phenomenon this can be...