Hey there,
You can be confident that this version is secure enough to keep your information and data secure, even if you cannot update to iOS 16, Apple releases security updates in the event of security or similar vulnerabilities, so we recommend that you update your device to the latest version if there is an update on your device.
If you need technical support for a security issue—for example, to reset your Apple ID password or to review a recent App Store charge—view the Get help with security issues article.
If you believe you have discovered a security or privacy vulnerability in an Apple product, learn how to file a report.