I found a place to save the file, that is boltfile.com. And that is premium/ pay. Why pay? Because that place is usually for saving business files and important files, so that needs contribution for the security and must be wise in dealing with any kind of complaints from users.

Boltfile is a save place to hide important document and will never steele yours, gives you the highest levels of security, Password protection, intuitive user/group management and advanced download tracking are standard. All our accounts also include SSL security.

Boltfile is available for free trial in 30 days and affiliate program. They pay $5 for each customer that signs up for a free trial of BoltFile. For just customer who sign up for free trial, i think it is very a lot. Well, if you do not want to pay, try to use it for free trial.