Ways to securely send OTBI reports through agents?

Summary

What are the ways to securely send OTBI reports through agents?

Content

I think this has been asked a few times in the past, but just wondering what are the ways to encrypt or securely send OTBI reports to recipients using agents? Perhaps a link to the output instead which they can download from somewhere.

e.g. currently if you are sending Excel reports through a scheduled agent, i dont believe theres a security option such as password protecting that can be applied to the attached file. If the data is too sensitive to send via email, what are the alternatives?