<A target="_blank" href="http://www.usatoday.com/tech/news/computersecurity/2009-10-08-cyberthieves-network-hackers_N.htm?csp=3">Workplace networks are much easier to breach</A> and more difficult to defend than anyone anticipated and even after a breach, companies won't admit it, even to their staffs. In two recent cases, the hacks went undetected for over a year.