how to add security questions on wp-registration page and validate it

Related Posts:

1. In Which Contexts are Plugins Responsible for Data Validation/Sanitization?
2. How to properly validate data from $_GET or $_REQUEST using WordPress functions?
3. Log in from one wordpress website to another wordpress website
4. Is it necessary to do validation again when retrieving data from database?
5. Secruity Questions on a timer
6. How to store username and password to API in wordpress option DB?
7. How to validate custom fields in custom post type?
8. How should one implement add_settings_error on custom menu pages?
9. Nonces can be reused multiple times? Bug / Security issue?
10. Can someone explain what wp_session_tokens are, and what are they used for?
11. WordPress and PHP Sessions – Security and Performance
12. How to check username/password without signing in the user
13. What is the difference between esc_html and wp_filter_nohtml_kses?
14. custom XMLRPC method plus authentication of user & WooCommerce order
15. How to check WordPress website username and password is correct
16. Nonce in settings API with tabbed navigation
17. WordPress REST API call generates nonce twice on every call
18. Escaping built-in WP function return strings
19. What is the difference between strip_tags and wp_filter_nohtml_kses?
20. WordPress custom authentication implementation
21. WP Cron doesn’t save or in post body
22. Security error WP 4.0 + WP phpBB Bridge [closed]
23. stray elements
24. WordPress restrict plugin file direct access
25. Plugin development: is adding empty index.php files necessary?
26. Confusion on WP Nonce usage in my Plugin
27. How to extend expiry time of jwt wordpress token?
28. Coding a plugin on WordPress; when should I sanitize? [duplicate]
29. Configuring WordPress Auth Cookie Expiration
30. Correct way check nonce (security) using old Options API
31. Verify Nonce returns false – Request Nonce returns correct value
32. Why do I need to check if wp_nonce_field() exists before using it
33. How to get the ID of the currently logged in user?
34. Is there any way to check for user login and send him to login?
35. WordPress security issue to output data from user input from theme option form
36. How do i validate data entered in a meta box so that only floats can be entered in a field?
37. Why is my javascript not invoked in my hooks except wp_head?
38. Verify if user is wordpress logged in from another app since wordpress 4.0
39. Secure Pages Best Practice
40. Multiple options pages validation for a plugin
41. Securing/Escaping Output of file content – reading via fread() in PHP
42. Custom login doesn’t work properly
43. best way to make a WordPresss multisite that is secure but at the same time supporting my plugin development efforts
44. Video Security just like facebook [closed]
45. Prevent invalid or empty values from being saved to the database and retain the form field values upon error
46. Is disabling test_form in wp_handle_upload a security concern?
47. How to connect my wordpress plugin to a remote database securely?
48. wp_nonce_field displaying twice
49. How to set a cookie for logged in users to md5($user->ID . “my_secret”)?
50. Checking a WordPress for OWASP top 10 vulnerabilities [closed]
51. How do I have now a duplicated user entry if this is not allowed (and I cannot replicate it)?
52. add_submenu_page hooked function must explicitly check user capabilities – why?
53. Are there any security risks when submitting data-attribute data through AJAX?
54. Can we intercept user_login and user_pass from a wp_login_form?
55. Why would you use esc_attr() on internal functions?
56. How do I validate extra pin field on my WordPress login form page?
57. Is it possible to use WP-CLI in a plugin (or theme)?
58. Using HTML links within translatable string
59. Where is the php file, that does the checks for login information?
60. How can I save a password securely as a settings field
61. Redirect returning users to a certain page?
62. How to validate inputs with filter in register_setting callback
63. Using password protection to load different page elements?
64. HTML Elements in my WP Plugin being generated in JS. Security and Translated Text Question about this method being used
65. How do I add a 5 digit ZIP code validation to a Contact7 form?
66. $ is not defined [duplicate]
67. Hiding the WordPress login and password fields from login page
68. How to store sensitive user data (passwords)
69. Basic Auth .htaccess on wp-login, but allow logout from woocommerce
70. How do I make secure API calls from my WordPress plugin?
71. esc_attr() on hard coded string
72. Experts opinions needed: How (in)secure is this approach?
73. What is more secure checking capabilities of user or checking role of user in WordPress plugin development
74. How to create session for user which is not an admin user
75. Data Validation, dynamically generated fields (select for example)
76. oneOf two possible objects in WP REST API?
77. Rest Api WordPress
78. esc_url, esc_url_raw or sanitize_url?
79. wp_verify_nonce is always false even when the nonces are identical
80. Is it possible for two WordPress plugins to share the same code base?
81. Set page to draft on plugin deactivation
82. Can one plugin activate another plugin via script?
83. Script to replace default blogroll with links to my social media URLs
84. Create a Plugin to Download Files from Web to Server
85. My plugin creates custom widgets, How can I programatically add them to existing sidebar widget areas?
86. How to deal with different jQuery versions?
87. WP plugin repository didn’t parse readme.txt correctly
88. How to show multiple instances of the WP125 Widget?
89. Restore svn trunk of my plugin repository to the initial state?
90. “Rendering of admin template [path to template] failed”
91. Can I attach a plugin via my add_filter callback contents?
92. Is there any way to pass messages from a script to a redirect target in a hidden fashion?
93. What should I pass for $needed_dirs when calling _unzip_file_pclzip (aka PclZip)?
94. Anyone using unzip_file successfully? It uploads the zip but doesn’t extract it!
95. Custom Path for a Plugin
96. WP 3-way voting system: On to something! Please help!
97. Why is the expected file not being deleted?
98. How can the_excerpt (or equivalent) be called on a category description?
99. List categories with descriptions via plugin
100. How to determine which capability to use?