What do you mean by OS data security?You won’t have any OS data security.
No Advanced Data Protection. If someone has access or gains access to his iPad, any personal data on the iPad is at risk, unless he has third party apps locked down individually.What do you mean by OS data security?
Doesn't ADP apply only to iCloud data ? : https://support.apple.com/en-us/102651#advancedNo Advanced Data Protection. If someone has access or gains access to his iPad, any personal data on the iPad is at risk, unless he has third party apps locked down individually.
Yes and since the OP is using the iPad without an account, there is no protection of data outside of third party apps he may use.Doesn't ADP apply only to iCloud data ? : https://support.apple.com/en-us/102651#advanced
Passcodes and passwords
To protect user data from malicious attack, Apple uses passcodes in iOS, iPadOS, and visionOS, and passwords in macOS.support.apple.com
...On an iPhone, iPad, and Apple Vision Pro, setting up a device passcode or password, the user automatically enables Data Protection...
So ADP only applies to iCloud data, and OP wouldn't have any iCloud data because they'd have no iCloud account.Yes and since the OP is using the iPad without an account, there is no protection of data outside of third party apps he may use.