WordPress is most used blogging platform, because of this it is most targeted by spam and hackers. You can protect your WordPress blog by using some free WordPress plugins.
It’s not just about your PC protection your website also need protection from worm, spam, backup etc. You can protect your WordPress blog by using some plug-in. Your WordPress installation need regular backup, spam protection, Antivirus and not just that you need to protect your blog from down time from sudden Digg traffic.
5 WordPress Plugin to Sure your Blog
1. WordPress Database Backup
WordPress database backup creates backups of your core WordPress tables as well as other tables of your choice in the same database. You can take backup immediately or can schedule your backup; you can also receive your database backup on email.

2. Antivirus for WordPress
Viruses, worms and malware exist for WordPress and could easily attack your WordPress installation. AntiVirus for WordPress monitors malicious injections and warns you of any possible attacks.

3. Akismet
To create back links web marketers post lot of spam comment. They use software which post comment on regular bases. To filter spam comment manually it can be difficult task. Akimet remove spam comment as they are posted this help to protect your blog from spam.

4. WP Super Cache
WP Super Cache is a static caching plugin for WordPress. It generates html files that are served directly by Apache without processing comparatively heavy PHP scripts. By using this plugin you will speed up your WordPress blog significantly. If your site appears top on Digg.com, Reddit or any other popular site then this plugin is for you.

5. Secure WordPress
Secure WordPress Plugin remove Error information on login page; adds index.html to plugin directory; removes the wp-version, except in admin area. This help to make your WordPress installation more secure.


Nice list, I use a few of these and a few others but it’s nice to fill in that missing gap.
Thanks
Thanks for share