With so many laptop computers being stolen, it's not just transactions online you need to worry about, it's your computer itself. Do you store sensitive information in your computer, such as a file with all your passwords in it? If you do, you need to password protect your computer and encrypt your files.
In Windows, encrypt a file by right-clicking on it and choosing “Properties”. Under the “General” tab, click “Advanced” at the bottom. Then click “Encrypt contents to secure data” and click “OK.”