Every March 31, people and organisations around the world pause to remember one simple but often neglected task: backing up their data. It is a small habit that can make all the difference when something goes wrong.

30%

of users have never made a backup

1/3

of hard drives fail within three years

60%

of SMEs hit by a major data loss close within six months

Why does World Backup Day exist?

World Backup Day was created in 2011 as a community initiative on Reddit. The idea was simple: most people know they should back up their data, yet many postpone it. Its date, the day before April Fools’ Day, is a reminder not to let data loss become a bad joke.

Hardware failure is only one cause of data loss. Ransomware, accidental deletion, theft and physical damage can affect individuals and organisations of every size. A successful attack can render all of your files inaccessible in minutes.

Worth knowing

Ransomware can make every copy connected to the production network inaccessible within minutes. A disconnected backup preserves an independent recovery path without relying on payment of a ransom.

But ransomware isn't the only threat. Accidental deletion, natural disasters (fire, flood), theft of equipment or simply the aging of storage media are among the most common causes of data loss.

The golden rule: the 3-2-1-1 backup

IT security experts and ANSSI agree on a proven method to effectively protect data. Easy to remember, it covers a broad range of data-loss scenarios. The 3-2-1-1 rule works as follows:

3 copies of your data: The original and two backup copies. If one is corrupted or destroyed, the others take over.

2 different types of media: External hard drive, USB key, NAS, magnetic tape… Never put all your eggs in one basket.

1 offsite copy: At least one backup must be stored in a physically different location: cloud, safe at a loved one's home, datacenter, etc.

1 offline copy: Keep one copy disconnected from the production network so an attacker cannot reach it.

What can you do today?

World Backup Day is above all a call to action. Here's what you can do now to protect your data:

  • Identify your most valuable data: administrative documents, invoices, contact details, emails, etc.
  • Configure an automatic and regular backup (daily or weekly depending on needs) on your operating system
  • Start a complete backup of your critical data
  • Check that your existing backups are functional by carrying out regular restore tests
  • Raise awareness among your family, friends and colleagues to adopt these good practices

World Backup Day is a useful prompt to check whether your copies are current and recoverable. A short test today can prevent a much longer recovery effort later. When did you last test your backup?