| dc.description.abstract | Due to the popularity of the Internet, sending and receiving e-mail has become a part of daily behavior, and it is the most convenient and fastest communication channel among people and among enterprises. Because of these characteristics, email system is used widely to deliver messages by tens of millions of users every day. However, whether the user behavior is reasonable is an issue of concern. Some accounts are used to spam all kinds of advertising letters or even commit fraud and illegal crimes. The losses caused by economic crimes are increasing year by year.
Therefore, in order to prevent account errors, the study will investigate and analyze the record of users’ using emails on a daily basis. Based on the email record history, I can infer whether an account has become a potential or high-risk factor.
In the study, BI（Business Intelligence）is used to process large amounts of unstructured data, analyze the email record history of the case-study company, and create tables, dashboards, and data visualization. Therefore, managers and users are able to know whether the email accounts are used inappropriately and take precautions or countermeasures when account error occurs.
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