Still running Windows 10? Here's why that's a bad idea

A depressingly large number of PCs are still running Windows 10, months after support for that OS officially ended. If you haven't signed up for extended security updates, history says you're asking for big trouble.

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ZDNET's key takeaways

• Millions of computers globally are still running Windows 10.
• Attackers are ready, willing, and able to exploit unpatched PCs.
• Signing up for extended security updates is a crucial step.

Hundreds of millions of computers worldwide are still running Windows 10, months after the one-time king of PC operating systems officially passed its end-of-support deadline.

If you're responsible for one of those machines and you aren't ready to upgrade to Windows 11, you can sign up today for an Extended Security Updates (ESU) subscription -- consumers can get those updates free through October 2026 ...