1.Change Your passwords from the generic passwords given . strength is key.
2.Back up your site.
There are free plugins you can use;
BackupToDropbox – Perfect for any Dropbox users looking to backup their entire WordPress site. It’s best for those with sites less than 2GB in total.
BackUpWordpress – Great for WordPress beginners and novices. It’s simple to use and creates a full backup which is sent via email.
BackWPUp – Great for those looking to backup their website to third-party services (i.e. Dropbox, S3 etc). Also great for users who want to backup multiple WordPress websites.
Snapshot Backup – Good overall backup plug-in, although lacks third-party backup functionalities that many other plug-ins have.
WP Complete Backup – Simple plug-in that is great for those looking for an easy backup and restoration tool.
WordPress EZ Backup – Great backup and restoration plug-in aimed at less experienced WordPress users. Lacks third-party functionality.
Online Backup for WordPress – Good for relatively small WordPress sites and easy to use for beginners.
XCloner – Feature-rich plug-in aimed at the more technically-minded, experienced WordPress users.
Snapshot (developed by WMPU.org) – Fantastic all-round solution for beginners and WordPress experts alike. Not a free plug-in but available for just $19.
3.One of the best things you can do to help keep your site secure is to make sure it’s updated to WordPress 3.7, which offers background updates for security and minor releases.