Scan your Magento website for security vulnerabilities
Are you running an older version of Magento?
Do you want to check that your current website is secure?
If so, try this useful site: MageReport, to scan your Magento website (free).
Here is a description of what the service is:
“This free service gives you a quick insight in the security status of your Magento shop(s) and how to fix possible vulnerabilities.”
Before making changes and adding patches, always backup your current files and database so that you can restore them in the event of something going wrong.