There are few solutions which can be completed:
a. Verify that your WordPress script is updated to the latest stable version.
b. Install a captcha plugin. A good selection is the WordPress ReCaptcha plugin.
c. WordPress has a preinstalled application against spam – Akismet.
Before you can install Askimet on your blog, you need to have the wordpress API key. If you are registered on the official wordpress site, you will get the API key in your wordpress dashboard.
If you don’t see the key, you have to register on the official WP site. Once registered, the API key will be sent to you in the welcome email.
How you can activate Akismet for your blog :
I. Go to your WordPress admin > Plugins > Installed.
II. Click Activate. The Akismet plugin will be start.
III. Click “enter your WordPress.com API key” (you can also click Akismet Configuration in the Plugins section)
IV. Enter your WordPress API key.
V. Click Update options.
VI. If you have entered a correct API key, it will be verified.
After activation Akismet will guard your blog from spam. You will be capable to detect the spam in your blog comments. To flag the spam comments you can access the blog comments section from the admin area.
d. You can use WordPress Project Honey Pot plugin to stop comments from dubious Ips.
WordPress is a compilation of files and a database. To take a backup your WordPress blog, you have to require to backup both (files and the database). It is always recommended to have regular backups of these files and the database to avoid any data loss.
How to backup the WordPress files?
1. You can backup your wordpress files through FTP.
2. Copy the files to your local hard drive.
3. You can easily upload back the files and your site will be restored.
4. If you are not confident about which folders should be copied, please copy the whole ‘public_html’ folder or the WordPress directory.
How to backup the WordPress database?
1. You can easily make a dump file (export/backup) of a database utilized by your account. In order to do so you should log into the phpMyAdmin tool ready for use in your cPanel. The phpMyAdmin tool will be loaded shortly.
2. You can choose the database which you would like to backup from the drop-down menu, named “Database”.
3. A new page will be loaded in phpMyAdmin displaying the chosen database. To proceed with the backup click on the Export tab.
4. The options that you should choose separately from the default ones are Save as file (which will save the file locally to your computer in an.sql format) and Add DROP TABLE.
5. Click on the Go button to start the export/backup process for your database.
6. A download window will pop up prompting for the accurate location where you would like to save the file on your local computer. If your browser’s settings are proper, the download starts automatically.