Lookout Security & Antivirus
You're just as vulnerable from viruses and other security threats on your Galaxy Tab as you are on other computing devices, so you may want to download Lookout Security & Antivirus. The free version comes with antivirus features so you can block any malware, spyware, and Trojans that come your way.
You can also schedule scans of your Tab. The "security" part of the suite includes a "Find My Phone" feature so you can locate your lost or stolen tab. The suite even includes backup to and restore from the mylookout.com website.
After you install the app, you can upgrade to the premium version that includes safe browsing capabilities, remote lock and wipe, and advanced backup features. The premium version costs $2.99 per month or $29.99 per year.
Price, standard version: Free