Web bugs are HTML elements, often in the form of image tags, that retrieve information from a remote web site. While the image may not be visible to the user, the act of making the request can provide information about the user. Web bugs are often embedded in web pages or HTML-enabled email messages.
A small image in an HTML page with all dimensions set to 1 pixel. Because of its insignificant size, it is not visible; but it is used to pass certain information anonymously to third-party sites. Mainly used by advertisers. Can also be referred to as a Web Beacon or an Invisible GIF.
Images fetched from a remote web server that are used by commercial organisations to monitor people's use of websites.
Code that, when embedded in a message, may be used to send unauthorized information about you offsite. trimMail Inbox disables web bugs.
Web bugs are codes that can identify a particular computer and help advertising services far removed from the site determine whether electronic promotions are well-read and effective in prompting someone to buy a product. They often work with cookies to greatly enhance the ability of outside observers to track and analyze activity, most often without a computer user's knowledge.