This article relates to iOS and how even a fully patched older version isn't enough, but the principle applies to any internet connected OS. Don't delay those updates, especially the security related ones.
uk.news.yahoo.com
iPhone users are once again being warned and this one is hard to ignore. If your device is not running the latest version of iOS, you could now be vulnerable to new spyware attacks targeting its devices.
If you haven’t already upgraded to iOS 26, you should do so immediately.
Apple has suggested that recent attacks are exploiting vulnerabilities in older software, and simply sticking with iOS 18, even if it is fully updated, is no longer enough for newer devices. In fact, iPhones capable of running iOS 26 cannot remain protected by updating iOS 18 alone.
For many users, upgrading will automatically involve powering down and restarting the phone as part of the installation process. That reboot isn’t just routine housekeeping — it’s a key part of Apple’s security response.
Apple’s spyware warning explained and why restarting your iPhone still matters
From urgent software updates to advice on restarting your phone, here’s what Apple’s latest spyware warning means for iPhone users, and what you should do next