I have a headache with my shop using Magento, my shop is very vulnerable to hacking by bots or other people. They often add some scripts and files to sending spam mails.
I think they come to me from old files, so I try to update all addons and Wordpress (integrated with Magento). I update all without Magento files I got 1.8 CE version. I try to keep safe my shop using some security tricks from some blogs which I found. When I did it I think it's end of my problems!! But today I open mail from my host provider with call that my server sent a lot of spam.
There is some ways to secure my shop to future attacks? What do I have to do when I clean up my shop?