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Devices and protection

Attackers use flaws that already have a fix

Updates feel like an interruption, and putting one off for a few weeks seems harmless.

1 min readExplainer

The short version

Attackers rarely need a new trick. The fix for the flaw they use is often already published.

What actually happens

When a software maker publishes a fix, it also tells everyone, attackers included, where the flaw was. Criminals then scan the internet for systems that have not been updated yet.

The US government keeps a public list of flaws that attackers are confirmed to be using. New entries arrive every week, in everyday business software such as firewalls, remote-access tools, browsers and office software. Our home page shows the latest entries as they are added.

Patching works when it is routine: updates applied on a schedule, devices that missed one found and fixed, and the urgent ones handled first. Equipment that no longer gets updates needs a replacement plan.

What you can do today

  • Turn on automatic updates on phones, browsers and any home computer used for work.
  • Ask when your firewall and remote-access equipment were last updated. They are common targets.
  • List the equipment and software that no longer gets security updates, and plan to replace it.

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