If you have any doubts that your OsCommerce security has been compromised please follow these steps:
1. Check if you have any .php files in the images directory. By default OsCommerce does not store any .php files there.
2. Check for suspicious admin users. This can be done by logging in your OsCommerce admin backend and choosing the option 'Administrators' from the Configuration menu. By default there is only one administrator.
3. Download all your files and scan them with an antivirus software. This can help find some popular exploits but not all.
The above steps are simple but efficient. However, they are not always enough and it is recommend to seek professional help. If you are interested Siteground will be pleased to offer you its web hosting and security services.
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