Which statements are correct

$$ The secure booth technology in mobile devices make use of public key infrastructure

$$ The user script which is used for encrypt data in mobile devices usually does not depend on the user password

$$ In modern mobile devices architecture, encryption strategies may involve the use of multiple keys for enhancing security across different part of the file system

$$ In standard desktop operation systems application are usually isolated and sharing data between them is complicated

Which statements are correct

$$ Fuzzing is an approach to findings bugs in which common request and input are investigated

$$ Symbolic execution involves path conditions, which however do not impose any constraints on symbolic values used to compute.

$$ Background applications in a mobile device must be supplied with the user key to be able to process the encrypted data.

$$ The web browser will send to a corresponding server all cookies it has matching a domain after a link is clicked.

Which statements are correct

$$ Operating system of a mobile device is usually stored in the read$-$only memory $($rom$)$

$$ Cross$-$site scripting$($XSS$)$ attacks can be countered with disallowing or filter HTML tags in users post

$$ In standard desktop operating systems application security, applications are treated as principals, while users are not treated as principals

$$ In android the code of the mobile app is signed by the developer private key without manifest describing various security properties of application