Due for public release in October, Windows 8 is the most secure Windows operating system to date, my colleague Seth Rosenblatt says. His review is here. The operating system tackles the inconvenience that passwords pose to a population addicted to the Web. It lets users log in with their Windows Live IDs across multiple PCs, which will allow people to sync their login credentials to all of their Windows 8 PCs. As a result, people can then set up a complex password for each online account without having to remember it. And Microsoft is beefing up the malware protection in Windows 8 and adding more robust features to its Windows Defender tool.