A large set of the rules are not the repository owners created rules however they are inspired by some other online entry. This page will try to capture all such sources of References as and when spotted.
List in no specific order
http://www.slideshare.net/erchetansoni/complete-wordpress-security-by-chetan-soni-sr-security-specialist-at-secugenius-security-solutions http://seclists.org/fulldisclosure/2013/Jul/38
http://journalxtra.com/websiteadvice/wordpress-security-hardening-htaccess-rules-4025/