The memo, sent by Google's security and investigations team, told employees that the company had dismissed four employees "for clear and repeated violations of our data security policies." Jenn Kaiser, a Google spokeswoman, confirmed the firings but declined to elaborate... This month, Google placed two employees, Laurence Berland and Rebecca Rivers, on administrative leave, saying they had gotten into confidential documents that were not relevant to their work. They were among the four workers who were fired, according to two people familiar with the dismissals... In the memo, Google said the fired employees had repeatedly searched for, looked through and...