VaultPress is a WordPress backup service from Automattic, the parent company of WordPress itself. VaultPress was an invitation only company until now and an invite from an existing member was needed to signup at VaultPress.
But now VaultPress is no more an invitation based system and anyone can sign up for it. You don’t need a golden ticket to use VaultPress anymore.
If you run a business blog or if your business site is based on WordPress, then you must be assured that you have the WordPress database and files backed up everyday. VaultPress does that and much more more. It also scans all your WordPress files for security vulnerabilities.
The only issue with it is that its memory intensive and may cause 500 internal errors if you are on a shared web host. Check out VaultPress now.