I have noticed one of my websites has an iframe added into it which links to a malware site or similar (won't include URL, but the domain is s l u x x q q g y k e w o l m o l i . i n
without the spaces).
It's just html / css and javascript...no Wordpress installed or any form of content management system. I am going through the html files to remove any instances of it but wha ti would like to know is how i protect against this in the future I.E how did someone manage to get it onto my website?
Any help or resources much appreciated