Using a sample of information and security data breaches the present research examines the public announcement impact between Brick and Mortar firms and E-Commerce firms. The dissertation initially analyzes the effects of publicly announced information and security breaches on abnormal stock returns, abnormal trading volume, and firm risk. The dissertation then analyzes differential impact between Brick and Mortar firms and E-Commerce firm’s market value following a data breach. Using a sample size of 38 information security breaches, E-Commerce firms resulted in more negative abnormal stock returns than Brick and Mortar firms. While data breach announcements did not significantly impact retail firms as a whole, they did have a significant impact when broken into the subsets. E-Commerce firms that announced an information security breach experienced abnormal trading volume.
|Commitee:||Bouvin, David, McLaughlin, Gregory, Williams, Barbara Butts|
|Department:||Business and Technology|
|School Location:||United States -- Minnesota|
|Source:||DAI-A 77/09(E), Dissertation Abstracts International|
|Subjects:||Business administration, Information Technology|
|Keywords:||Abnormal returns, Capm, Data breaches, E-commerce, Event study, Information security|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be