...Shan Xiao; Danielle Xu; Andre Jiang; Aimin Zhang Purpose Data breaches represent a growing threat to firms’ financial performance and investor confidence. This study aims to examine short- and long-term stock market reactions to data breach announcements using a comprehensive sample of 3,316...

... firms without grouping them into the various sectors may be non-informative; financial sector firms tend to react cumulatively to cyberattacks over a three-day period than other sectors; and technology firms tend to be less reactive to the announcement of a data breach. Such firms may possibly have...