After a laptop goes missing, companies must rush to <A HREF="http://www.eweek.com/article2/0,1895,1996017,00.asp?kc=EWNAVEMNL073106EOAD">determine the severity of the incident</A> based on the data involved, and decide who to call first for outside help. It's the call that no IT manager wants to receive, but one that's clearly ringing bells across the world of enterprise security: An employee's laptop computer has been stolen, and it may contain sensitive data. Experts say the manner in which companies respond to such incidents, and the strategies they employ to improve their device security, will determine the impact that stolen laptops will have in putting affected companies' information at risk.