...companies said they investigated a suspected email leak of company secrets while 26 percent said they fired people for violatingemail policies. Twenty-three percent of US companies said their business was impacted by the exposure of sensitive...
http://www.infosecurity-us.com/news/080613_Enterprises.shtml
...confidential information in the past year. "Nearly a third [of companies], 31 percent, terminated an employee for violatingemail policies in the same period (up from 26 percent in 2008)," said Proofpoint's statement. Blogs are also...
http://www.out-law.com/default.aspx?page=10290