https://techcrunch.com/2023/02/13/apple-releases-new-fix-for-iphone-zero-day-exploited-by-hackers/

Apple on Tuesday released a new version of the iPhone and iPad’s operating systems — iOS 16.3.1 and iPadOS 16.3.1 — to fix a vulnerability that hackers were exploiting in the wild, meaning they were taking advantage of it to hack Apple devices.

In the security update page, Apple wrote that it “is aware of a report that this issue may have been actively exploited.” This is the language Apple uses when someone alerts the company that they have observed hackers exploiting a bug against targets in the real world, as opposed to a vulnerability found by a researcher in a controlled environment, so to speak.