Heads up, if you have an older iPhone, there's a permanent security flaw that Apple can't fix. Researchers just found a way to crack open the deepest, most protected part of Apple's A12 and A13 chips, which power devices like the iPhone XS, XR, and 11 series. They call this exploit "usbliter8," and it lets them run their own code right when the phone starts up.
Think of it like this: most software updates are like repainting your house, but this flaw is like a crack in the foundation that was there when the house was built. Since this part of the chip, called SecureROM, is literally "burned" into the hardware, no software update, no matter how many times Apple tries, can ever patch it. This isn't a hack that someone can do from across the internet, though. It requires physical access to your device.
Why does this matter? While it’s not an immediate panic, it means these older devices will always have this vulnerability. For most people, if your phone is always with you, it's not a huge concern. But if your phone falls into the wrong hands, a skilled attacker could potentially bypass some security features. If you rely on top-tier security for sensitive work or just want the latest protections, consider upgrading your device.
This flaw is permanent for older iPhones, so weigh your personal risk and device usage.