I am currently facing this problem that I can't find any help from the hosting company and it's driving me crazy.
All of a sudden most of my websites on different servers get the same virus that would add this line of code before the </body> tag of all index, home and login pages regardless of php or html, etc.
this is what it looks like:
></script><!-- c65 -->
I tried delete them, but one or two weeks later, they appear again. And I asked the hosting to scan their server, they also found nothing.
Does anybody have experience with this or suggest any solution?
Please help me out. Thank you very much.