The best anti-malware prevention is the finger you use to left-click your mouse. The safest key on your keybpard is ESC and is much more powerful than hoping for an Undo feature.
Microsoft
With experience dating back to our inception, we offer sales, installation, support, and training for Windows XP, Windows 7, Windows 8.x, and Office (Access, Excel, Outlook, PowerPoint, Publisher, Visio, and Word) versions 2003 through 2013. This is another product area in which we offer tailored, client-site and classroom training.