[diggan]

Encrypt the files before adding to IPFS and then decrypt after receiving them. Support for encryption will be built-in into IPFS in the future but for now, this solution works. There is a issue tracking this here: https://github.com/ipfs/faq/issues/6

Also, when adding files yourself, those files become pinned by the default. Getting files won't pin automatically however. You have some more information about pinning here: https://github.com/ipfs/examples/tree/master/examples/pinnin...

[espadrine]

Ah, good to know. Still, you end up having to develop your own ACL system if you have multiple users (eg. family). Especially, shared directories are tricky.