Protecting your site from attackers is important — deepen your knowledge of WordPress security with our collection of resources for everyone using WordPress. From WordPress security fundamentals to expert developer resources, this learning center is meant for every skill level. Learn and discover best practices in our in-depth articles, videos, industry survey results, helpful graphics and more.
The WordPress Security Learning Center
WordPress Security: The Ultimate Guide
An excellent article from WPMU Dev website. if you are concerned about your WordPress website security.
Like most website owners, security was never top of my priorities. It was only when one of my websites was hacked that I realised how common it was for websites to be compromised by malicious parties.
Here is a quick overview of the 4 best practices to keep your WordPress website secure.
For all WordPress users: Security issue with WordPress 3.5.1 sites - Denial of Service
More information here with the instruction to patch the problem: http://cxsecurity.com/issue/WLB-2013060091