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.
展开▼
机译：通过使用违反信息和安全数据的样本，本研究研究了Brick和Mortar公司与电子商务公司之间的公告影响。本文首先分析了公开宣布的信息和安全漏洞对异常股票收益，异常交易量和公司风险的影响。然后，本文分析了数据泄露后，Brick and Mortar公司与电子商务公司的市场价值之间的差异影响。使用38个信息安全漏洞的样本量，与Brick和Mortar公司相比，电子商务公司所导致的负异常股票收益更大。尽管数据泄露公告并没有对整个零售公司产生重大影响，但将其细分为零售子集确实会产生重大影响。宣布信息安全漏洞的电子商务公司的交易量异常。
展开▼
