What is this site hack called?

Question

Burglary protection

Hello.
I found a site that was hacked, and as a result of hacking, when going to it from search engines, he redirected users through a cloud of sites to some site that either talked about a virus or offered to download software. What is the name of such a hack and how to fix it?

Answer 1

The site survived the introduction of malicious code.
Elimination of consequences:
1) Suspension of the site;
2) Studying the logs of visits and server errors, establishing the point and time of infection (if possible);
3) Saving the state of the site directories and the database dump for study;
4) Restoring site scripts from an isolated developer repository;
5) Restoring the site database from a backup before the time of infection;
Elimination of causes:
6) Analysis and correction of access rights to FTP directories, CMS users;
7) Analysis and correction of code for injection vulnerability in requests and templates.
8) Analysis of data in the database for the content of injections in table records.
9) The resumption of the site with careful monitoring of the logs.