I'm contributing to an open source project and we setup a testbed for security testing. We want to start a challenge to find security flaws and my question is: how do we attract hackers to participate?
How shall the challenge be designed (except for a webpage that explains the why and how)?
There is a very limited budget (~1000 $) and we could do T-shirts & some swag, but there is no room to pay for bounties.
Edit1: What we want/need is the feedback from everyone who found a flaw, not just people hammering their tools onto the webapps.