I recently had someone upload a malicious file to one of my sites hosted on Godaddy. Godaddy made me aware of the situation and is requiring that I remove any and all malicious files and that I implement more security into my sites to ensure this doesn't happen again.
Since I had no idea that some of my back-end files were vulnerable due to having open admin access, I now need to make sure this doesn't happen again.
I have about 20 sites +/- that I need to ensure are fully 100% secure from hackers and potential malicious file uploads. I believe that there are only 2 sites that had this issue, because the malicious file was uploaded in an area where admin can upload products for E commerce and there are only two sites that allowed products to be uploaded.
This is easy for the right person, please only respond to this project if you are fully qualified and 100% confident that you can help me secure my files without messing up any of my websites.