Scanners and firewalls. Get a good virus scanner, which checks all the files on a computer to see if there are viruses, and be careful what you download and run on your computer. Personal firewall software will help to protect you when surfing the Internet. Exercise common sense. Take time to read and understand the privacy policies of any Web site to which you provide information.
Many sites collect and disseminate information.
A reputable site will publish its privacy policies.