Some companies are limiting the risk by conducting online ______ only with established business partners who are given access to the company's private intranet.

单项选择题It is important that employees stick to their company's security policies because ______.

单项选择题The word underscore in the last sentence of the text probably means ______ .

单项选择题The 2003 survey reveals that ______.

单项选择题Which of the following elements is the most critical to online security according to the author

单项选择题Which of the following statements does the author imply