Internet security. Conceptual image of security on the Internet being breached. The image shows a gold padlock above a computer landscape. The padlock has a large hole in it through which confidential information and zeros and ones (binary data, the language of computers) easily pass through. It is important for users of the Internet to know that their information is secure. Financial transactions, confidential doc- uments and products such as software are often communicated on the Internet. Although they are usually protected by sophisticated security systems, these systems are often inadequate.