He worked with them for a year to help fix their product
I hope they gave him a little incentive at the end of it all. The other day I watched an interview with the guy who compromised one of the most common hotel keycard locks - he said he never even bothered to contact the vendor because there was no way to fix the issue without replacing ~4 million circuit boards, so (more or less) "[f*ck it]".
Companies really should treat these guys right when they try to be helpful like this.