You wouldn't believe how many letters I get from folks who have had their personal information compromised or stolen. As much as I love the Internet, I know how dangerous a place it can be.

That's why I'm personally committed to helping all my listeners and readers stay as safe as they possibly can. I've put together one of the most comprehensive guides to online safety on the Web. Please check it out here. 

Thankfully, most people know that their personal information is vulnerable on their computers. But did you know that your smartphone may be just as vulnerable?

People use their mobile devices for everything from social networking to banking. They are very tempting targets for hackers and thieves. These apps can help stymie these criminals.

Lookout (Free; iOS, Android) - Lookout is a free antivirus and anti-spyware app for mobile devices. It also protects your phone in the event it is lost or stolen.

You'll be able to back up your contact data or find your phone using GPS location. Android offers a premium version for $3 per month that lets you remote wipe your phone and back up photos and call history.