HaSi is a hackspace in Siegen. We are a non-profit association founded in 2012 with the goal of promoting education. We archive this through communal soft- and hardware development. We also inform and educate about the critical use of online media and computers.

We teach and live a hacking mindset: following our curiosity, finding and fixing a problem's root causes independently, working in groups, and continuously improving our toolbox.

We are the home of CCC Siegen and the epoqe demo group.