Hi @Jenes hooshangi just to give some extra context to this.
This functionality isn’t Veeam initated, it’s driven by the third-party security product or service triggering an API call to Veeam to say that they believe an incident is taking place and to trigger a backup “out of band” of your normal backup schedule, aka on demand.
The concept behind this is that if a ransomware attack was initiated and a third party system detected this, it could tell Veeam to back everything up there and then to preserve the maximum amount of data, with minimal RPO. A common question with this is “well isn’t it too late by the time your backup runs” but when we think how fast a snapshot is taken, and Veeam reads from the snapshot, it does dramatically improve the chances of recovering live data with minimal data loss.