diff --git a/docs/web/data-security/index.md b/docs/web/data-security/index.md
index d9653b60e21aa34634ad0d0307640ffc0e28b5f9..2c49c6be145d1acd3d9a8b8fb45f40f239fc2021 100644
--- a/docs/web/data-security/index.md
+++ b/docs/web/data-security/index.md
@@ -10,4 +10,12 @@ To access the versions of a file, in the right-click menu click in `Details` the
 
 All files deleted from your personal space will land on the Trashbin and stay there for 6 months. Admins of a project can also see the trashbin of their project spaces, as described in [Projects](../projects/index.md)
 
+## Backup
+CERNBox keeps multiple backups of your data. Concretely, backups are kept for the following periods:
 
+- 7 daily backups (so, a snapshot for every day of the last week)
+- 5 weekly backups (so, a snapshot for every week for the last five weeks)
+- 6 monthly backups (so, a snapshot for every month for the last six months)
+- one backup of the last state of your CERNBox when you leave CERN
+
+As such, we can restore files only for up to six months. In case you would like to restore something from backup, please reach out to the CERNBox support team via a SNOW ticket.