The database received the attack twice and the room was filled.

[kasynhk]

DOes the site iself have a database backup? What is the path?

How to avoid this happening again?

[kasynhk]

The database was maliciously irrigated

Site front only evaluation area can leave a message,
So how does this malicious operation come true?

In addition, these malicious garbage hiding in the database where?

[Basara]

DOes the site iself have a database backup? What is the path?

How to avoid this happening again?

Hello.
AbanteCart save backups in the /admin/system/backup/
Another option if you create backups with hosting cPanel. And one more some hostings create own backups of your site database check with your hosting provider

[Basara]

The database was maliciously irrigated

Site front only evaluation area can leave a message,
So how does this malicious operation come true?

In addition, these malicious garbage hiding in the database where?

Why you think it is a database? If someone stole your hosting or ftp access this can be files injections

[kasynhk]

Advertisement found in this. Is there a security hole in this place?

[Basara]

Hi. From your screenshot it is not clear what table name is.

[abantecart]

Let me start with question what is a version of your AbanteCart? This is important. Also, what is the table name that was maliciously irrigated?