Update iPhones, iPads to prevent Wi-Fi attacks
Argonne’s Cyber Security Program Office is alerting the laboratory’s iPhone users to a critical vulnerability that could allow attackers full access to iPhones and iPads via Wi-Fi. Apple has released an operating system update, 10.3.3, which addresses this issue.
To download the update, open Settings > General > Software Update. The update will download and install automatically.
Apple has posted detailed instructions online.