My cliient's Dell XPS 1530 laptop running Windows Vista 64-bit Service Pack 2 with Norton 360 version 3 had its only user account password hacked, i.e., someone changed the password to something different from the original password so my client could not log on. The computer was hard wired to the Internet via a very old D-Link router attached to a Comcast cable modem. I am interested in learining about the ways the user account password could have been changed without my client's knowledge. For example, if someone had access to the computer, they could have made the change unbeknownst to my cient. What are some other ways? Thanks in advance for your thoughts.