In the endeavor of finding ways for easy data access for external researchers remote data access
seems to be an attractive alternative to the current standard of data perturbation or restricted
access only at designated data archives or research data centers. However, even if the microdata
are not available directly, disclosure of sensitive information is still possible. We illustrate that an
ill-intentioned user could use some commonly available background information to reveal sensitive
information using simple linear regression. We demonstrate the real risks from this approach with
an empirical evaluation based on a German establishment survey, the IAB Establishment Panel