💳 Cyberattack or payment and communication outage: what to do, step by step

Reviewed on

As in the 2026 supermarket attacks: card terminals, ATMs, the internet or the cold chain can all fail at once.

Open the guide in the app (works offline)

Before

  1. Keep some cash in small bills: without power or network, cards and ATMs don't work.
  2. Print out the phone numbers, the family plan and copies of your documents.
  3. Have a battery radio: it's the last thing to stop working.

During

  1. Get information from the radio and official channels. Be wary of messages asking for details or money "because of the emergency": scams go up.
  2. If the stores' cold chain has failed, avoid buying fresh meat, fish and dairy until it's restored.
  3. Use your home supplies and don't hoard: that way there's food left for people who have none.

After

  1. Replace what you've used from your supplies a little at a time, with your normal shopping.

What you need for this emergency

See the full kit: 72-hour home kit →

Other emergencies