The tech giant has warned that people still using an old version of iOS need to take action to "protect your iPhone from web attacks".

In a new security document on Apple's website, they wrote: "Security researchers recently identified web-based attacks that target out-of-date versions of iOS through malicious web content.

"For example, if you’re using an older version of iOS and were to click a malicious link or visit a compromised website, the data on your iPhone might be at risk of being stolen.”

Phones running iOS 15 to iOS 26 are protected from the vulnerabilities.

Although the company will often release updates and patches for security reasons, they don't often issue public warnings like this.

They continued: "We thoroughly investigated these issues as they were found and released software updates as quickly as possible for the most recent operating system versions to address vulnerabilities and disrupt such attacks.

"If you have kept your iPhone software up to date, then you are already protected.

"Keeping your software up to date is the single most important thing you can do to maintain the security of your Apple products, and devices with updated software were not at risk from these reported attacks.

"Devices with Lockdown Mode enabled are also protected from these specific attacks, even on out-of-date software, but should be updated to the latest iOS version as soon as possible."

They noted that a software updated for iOS 15 and iOS 26 dropped on March 11 this year, in order to "extend protection to older devices that cannot update to the latest version of iOS".

They added: "Devices with iOS 13 or iOS 14 must update to iOS 15 to receive these protections and will receive an additional alert to install a Critical Security Update in the next few days."