How to report a virus on the site?

Question

Information Security

Does anyone know a tool or service.
In general, I don’t know what ... Maybe you will formulate my question correctly in order to google more.
What would it be like when a virus or a hack or some other nastiness appeared on the site, a notification was immediately sent to the mail like you have this and that.

Answer 1

I use this:
searchengines.guru/showthread.php?t=697566 I
registered exceptions (for example, log files), put them on cron, and I receive a list of changed files by email.

Answer 2

• Linux Malware Detect
  
• AI-Bolit
  

Answer 3

Put some chrootkit on periodic execution of tasks with sending reports by mail.
Or some samhain to control file changes.
Or IDS / IPS such as OSSEC or Snort , which will send you alerts when suspicious activity occurs.

Answer 4

There is also https://yandex.ru/promo/manul