The glossary below contains many of the terms you will find in common use throughout our website. Please refer to this list to find definitions of terms and answers to other Internet security-related questions.

URL Uniform Resource Locator

The standard addressing system for the World Wide Web. A URL consists of two parts: The first part indicates the protocol to use (for example http:// or https://), and the second part specifies the IP address or the domain name and the path where the desired information is located (for example