Authorisation on data-extracion in an enterprise datawarehous

We are building an enterprise datawarehouse where all financial data will be collected from 7 other datawarehouses.

From the data-extraction point of view there are only a few extractors (export data-source in info-cube) allowed to extract from. Is it possible to put authorization on the info-cube where the data is extracted from. So it is not possible to extract with a RFC-user from other info-cubes?