Is it possible to ensure data safety after deleting it from the system?

After data is deleted from a system, its recoverability depends on how exactly the deletion is performed and what measures are applied.

• If data is simply logically deleted (for example, marked as deleted in the database), it can be recovered.
• If data is physically deleted (overwritten or removed from the storage device), recovery is more difficult but possible with special tools.
• To ensure data security after deletion, methods like secure deletion are used, such as multiple overwriting of data.

In iOS, for example, when files are deleted from an app, they may remain in the trash or cache until the system frees up space. To guarantee complete deletion, data encryption can be used so that after deleting the key, the data becomes inaccessible.

Thus, absolute data security after deletion can only be ensured with backups or special archiving mechanisms before deletion.