Last Updated or created 2023-01-04
Observe. Hack. Make. also known as OHM, was an outdoor hacker conference that took place in the Netherlands from July 31 to August 4, 2013
Note to myself: Add more text to this lazy bastard!
Sound Firewall V2
See also
https://www.henriaanstoot.nl/2001/08/11/sound-firewall/