WordPress security issues and website had recent defacement!

Retirable jQuery libraries: -http://searchinteractivestudios.com
Detected libraries:
jquery - 1.11.1 : (active1) http://code.jquery.com/jquery-latest.min.js
jquery-migrate - 1.2.1 : -http://searchinteractivestudios.com/wp-includes/js/jquery/jquery-migrate.min.js
Info: Severity: medium
http://bugs.jquery.com/ticket/11290
http://research.insecurelabs.org/jquery/test/
jquery - 1.11.3 : -http://searchinteractivestudios.com/wp-includes/js/jquery/jquery.js
jquery.prettyPhoto - 3.1.5 : (active1) -http://searchinteractivestudios.com/wp-content/plugins/wpglow-builder/assets/3rd-party/jquery-prettyphoto/main-script.js?v3_1_4
Info: Severity: high
https://github.com/scaron/prettyphoto/issues/149
https://blog.anantshri.info/forgotten_disclosure_dom_xss_prettyphoto
(active) - the library was also found to be active by running code
2 vulnerable libraries detected

Warning: User Enumeration is possible :o It is recommended to rename the admin user account to reduce the chance of brute force attacks occurring. As this will reduce the chance of automated password attackers gaining access. However it is important to understand that if the author archives are enabled it is usually possible to enumerate all users within a WordPress installation.

Warning: Directory Indexing Enabled :o
In the test we attempted to list the directory contents of the uploads and plugins folders to determine if Directory Indexing is enabled. This is an information leakage vulnerability that can reveal sensitive information regarding your site configuration or content.

/wp-content/uploads/ enabled

External link with issue: My WordPress Website | Just another WordPress site padlock icon
bonus.prostylertheme.com
Alerts (1)
Insecure login (1)
Password will be transmited in clear to -http://bonus.prostylertheme.com/login
Infos (1)
Encryption (HTTPS) (1)
Communication is NOT encrypted

63% of the trackers on this site could be protecting you from NSA snooping. Tell -searchinteractivestudios.com to fix it.
11 trackers:
-Google
-code.jquery.com
-Google
-Twitter
-connect.facebook.net Facebook
-apis.google.com
-Google
-searchinteractivestudios.com
-local.adguard.com
-Google
-www.mustbebuilt.co.uk

Quite a lot of SPOF: Possible Frontend SPOF from:

fonts.googleapis.com - Whitelist
(81%) -
(72%) -
(65%) -
(46%) -
(44%) -
(42%) -
(41%) -
(39%) -
(38%) -
(36%) -
(34%) -
(33%) -
(32%) -
(30%) -
(28%) -
(26%) -
(25%) -
code.jquery.com - Whitelist
(16%) -

polonus (volunteer website security analyst and website error-hunter)