Those who have Microsoft's Office suite almost always use Word and Excel. PowerPoint and Outlook are lower on the usage scale. Access lower still. And then there's OneNote, an application that gets far less attention than it should, so I'll explain why it's been indispensable to me for more than a decade. In Short Circuits: User Access Control alerts can be bothersome. They can be disabled, but doing so can make your computer less safe. This week a caller told me that my computer was being attacked and that failing to act could make it obsolete. I yawned and hung up. Microsoft has made some changes to Office 365 licensing. The already liberal polices have been even further relaxed. In Spare Parts (only on the website): If you want to announce a security breach in a way that few will notice, the best time is Saturday evening in the middle of a 4-day weekend. • Companies that use email marketing perform a lot of research to find out what works best. Hidden persuaders can be powerful.