protect files & registry from modification and deletion

i need to protect few files from modificatin & deletion . is file system mini filter the right option for this ? and any user mode way to achieve it ?

Probably what you are after is a Security Descriptor, I suggest that you begin your research here: https://docs.microsoft.com/en-us/windows/win32/fileio/file-security-and-access-rights https://docs.microsoft.com/en-us/windows/win32/secauthz/security-descriptors This can be used to protect both registry objects and files. It can be set from user mode