Scenario You are building a site where people can display and advertise their collections. This can take the form of texts, images, or sound and video recordings. Users can comment on the various submissions and point out links to other potential ancestors in the system. Everyone using the system must register by providing an email address and name. There are moderators who can remove and lock items where necessary. Users can lock their own submissions from changes and comments. The site has the following characteristics: a) There are group pages for discussion about particular kinds of collections but also pages dedicated to particular collections, b) Each collection has its own unique URL and can have pages under this that display individual items. c) Comments appear on the pages for the relevant text, image, etc. Users can delete and edit their own comments and reply to other comments. Moderators and the collection owner can remove comments, and lock or archive them. d) The site uses a variety of client-side packages to enhance its user experience. e) The site will be built using PHP, RedBean and Twig Question 5 - Security Make sure that you answer a) and b) separately and do not combine their answers. a) As described above, the site has a variety of ways that users can contribute material that may or may not appear. Describe the kinds of security attacks that might be directed at your site. b) Explain how you would protect your site and its users against these attacks