Scenario 05 · Increasingly common

Cyberattack and internet outage

In July 2024, a faulty software update knocked millions of computers offline worldwide: airports, hospitals, banks and stores. It wasn't an attack, but it showed what happens when the systems we depend on fail.

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The realistic picture

A major cyberattack or IT failure rarely lasts weeks, but it can mean days without card payments, ATMs, gas stations or medical appointments. In 2021, a ransomware attack shut down the Colonial Pipeline in the US and caused lines and gas shortages along the East Coast. And scams spike after every incident.

Before

  • Cash in small bills for at least a week of basic expenses, kept in two places.
  • Paper: key phone numbers, prescriptions, insurance policies, account numbers and a copy of your ID.
  • Backups of your photos and files: three copies, on two different media, one away from home.
  • Recovery codes for your important accounts, printed and kept with your documents.
  • Your car's tank above half and your area's map ready.
  • A radio: it works even when the internet doesn't.

During

  • Get information from radio and official channels. Don't trust screenshots or forwarded messages.
  • Distrust any message asking for data, passwords or payments to "fix" the problem, even if it looks like your bank. Call the official number yourself.
  • Avoid unnecessary trips if transit or traffic lights fail.
  • If you depend on a medical device or appointments, agree a paper plan B with your doctor.

Afterwards

Check your bank transactions, change passwords if the attack hit a service you use, and turn on two-step verification.