<A target="_blank" href="http://www.pcworld.com/businesscenter/article/156019/secure_your_vista_pc_in_10_easy_steps.html">Windows Vista fresh-from-the-box</A> leaves a chance for your personal data to leak out to the Web through Windows Firewall without your knowing. By making a few changes using the security tools within Windows Vista -or by adding free software -you can lock down your operating system.