HTML or HyperText Markup Language is the standard markup language for creating web pages. Web browsers receive HTML from a web server and render the documents into web pages.
HTML elements are defined by tags that use angle brackets, such as <p> and end with </p>. HTML generally starts with the <!doctype html> tag. The content within the
Some weaknesses of HTML include HTML Injection which can allow a user to input html tags into a form if it is not handling the user supplied data correctly. This allows for users to add malicious forms and other malicious html into a webpage that the user would see as legitimate.