Is there a good antivirus for hosting?

Question

Antivirus

Hello, there is one project on shared hosting, shells are constantly appearing there. The hoster offers to buy a subscription to an antivirus, the question is, is there a free antivirus that runs on the hosting, looks for malicious code and safely removes it? Of course, I will change the access details

Answer 1

ai-bolit helps a lot
and still helps to close vulnerabilities in your scripts

Answer 2

there is one project on shared hosting, shells are constantly appearing there.

Well, shells cannot start by themselves! CAN NOT!
As long as your team will have such an approach to system security hygiene and access control in the order of things, when shells on the site start up by themselves , until then no antivirus (neither paid nor free) will help you.