In the ongoing battle to fight internal and external threats on the corporate desktop, IT staffers may be forgetting <A HREF="http://www.eweek.com/article2/0,1895,1891447,00.asp?kc=ewnws112805dtx1k0000599">one very potent weapon</A> in their arsenal--system lockdown. As corporate IT managers evaluate products and technologies designed to protect corporate Windows-based computers against the ever-present tide of spyware, worms and Trojans, they should also consider a more proactive solution--locking down end-user computers by restricting rights and permissions and, consequently, users' ability to compromise their systems.