Summary:

• **What happened:** Apple found a serious problem in iPhones called a "zero-day" that bad actors were using to attack people. Apple quickly created a fix (called a patch) to stop the problem from hurting more people. A zero-day is a secret weakness that even the company didn't know about until hackers started using it.

• **Why it matters:** This attack was very advanced and tricky, which means the people behind it were really skilled at hacking. Apple released the fix right away to keep iPhone users safe, so it's important to update your device when Apple tells you to do so.