Incident in progress: three steps now.

  1. IsolateUnplug the network cable of the affected computer, or turn off its WiFi. Do not switch it off.
  2. Keep everythingDo not delete anything, do not pay any ransom. Take photos of the messages on screen.
  3. Change passwordsFrom another device, change the password of the affected mailbox and accounts.

Priority request

We call you back and respond remotely within 15 minutes.

Response times

  • 15 minremote response, at most
  • 4 hon site in Paris, at most
  • 6 hon site elsewhere in France, at most

You are not alone

  • 39%of small businesses had a cyber incident in 12 months (France Num 2026).
  • 80%say they are not prepared for one (Cybermalveillance 2025).

Official help and filing a complaint: cybermalveillance.gouv.fr

After the incident: prevent the next one