Because WordPress is the most popular CMS platforms on the Internet today, many hackers have consolidated their efforts toward only hacking or spamming WordPress websites. As a result, millions of WordPress blogs and websites are hacked each day, leading to lost work, irreparable damage to search engine ranks, and putting visitors and users in danger of having their own information hacked as well. Below are five plug-ins that can be used to increase WordPress security for your blog. If you also want to check out anti-spam plugin, check out the post: Top 5 WordPress Plugins to Kill Spam