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Security & prevention

Protect digital activity, understand risks and find relevant organisations. Prevention information and specialist services should be distinguished.

Security keys and a backup drive on a desk
AI-generated illustration · Fictional scene.

Direct links by need

Prepare your research

Two tasks in this topic need different information. Use these prompts to prepare a search or enquiry.

Prepare your research
TaskRecordWhat not to infer
Check an unexpected requestOriginal channel, action and known contactUrgency does not prove authenticity
Prepare account recoveryOfficial procedure and remaining accessDo not share passwords or sign-in codes

Keep missing information visible before deciding.

Decision aids

Restoring a backup: which files should you retain?

The newest file is not always enough to restore your data. The backup type determines which components recovery needs.

  1. Identify the backup set
  2. Locate dependencies
  3. Open a restored copy
Restoring a backup: which files should you retain?
SituationWhat changesUseful check
FullCopies all selected data.Check the scope and excluded folders.
IncrementalChanges since the previous backup.Retain the starting full backup and required increments in order.
DifferentialChanges since the latest full backup.Retain the starting full backup and chosen differential.

Test a non-sensitive file in a separate folder without overwriting the original. Record the recovered version and errors. Disconnect the medium after use: a connected copy can also be affected by an incident.

Documentation : Cybermalveillance.gouv.fr — Sauvegardes ↗ · · Read the reference record →

Before you continue

For an emergency, use the appropriate services; specialist links establish neither authorisation nor provider qualifications.

Within our AR network

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General-interest topics and everyday guides are available in four languages. Reference records and digital guides are provided in French and English. External website language depends on the destination.

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