An Analysis of Cyber Breaches and Effects on Shareholder Wealth

Karen M. Hogan, Gerard T. Olson, Jackson D. Mills and Peter A. Zaleski

International Journal of the Economics of Business, 2023, vol. 30, issue 1, 51-78

Abstract: Cyber data breaches are an evolving risk facing all firms and threatens their ability to conduct business activity. Due to a lack of available information, very little is known about the frequency and severity of data breaches and the financial markets’ responses to them. This study uses a unique proprietary data set that includes cyber data breach information for 3,992 publicly traded firms during the 1990 to 2019 period. We find cyber breaches vary with time and cyber criminals focus on particular industries, types of information, access sources, and countries. We find significant short run negative abnormal returns around the announcement of cyber events and larger negative returns in industries with higher frequencies of attacks and attacks involving personal financial information. Additionally, we find increasing negative cumulative abnormal returns up to 250 days after the announcement.

Date: 2023
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://hdl.handle.net/10.1080/13571516.2023.2168994 (text/html)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:taf:ijecbs:v:30:y:2023:i:1:p:51-78

Ordering information: This journal article can be ordered from
http://www.tandfonline.com/pricing/journal/CIJB20

DOI: 10.1080/13571516.2023.2168994

Access Statistics for this article

International Journal of the Economics of Business is currently edited by Eleanor Morgan

More articles in International Journal of the Economics of Business from Taylor & Francis Journals
Bibliographic data for series maintained by Chris Longhurst ().