[o2sd98]

First of all, you need to distinguish between content that is illegal and that which infringes copyright. Child pornography is illegal, copyright infringement depends on legal jurisdiction. There is no such thing as pirated media, that is specious nonsense made up by the marketing department of some media association.

In some jurisdictions, it is permissible under copyright law to make a backup of media that you own, and in others it is not. If you were to host the service in the latter jurisdiction, you may have an issue, if the former, probably not.

If you were to encrypt the files when storing them, and decrypt only when a user has been authenticated, that would be a strong argument against claims of copyright infringement, but adds a technical hurdle to your application.

At any rate, IANAL, so seek professional advice if your finances permit.

[pickthree]

Thanks!