White hat hacker Gerhard Wagner has earned $2 million after reporting a solution to a potentially costly “double-spend” bug on the Polygon network.

Immunefi is a security company that published a blog on Oct. 21, detailing their findings. This helps to facilitate bug reports in decentralized finance projects, Polygon network’s Plasma Bridge was at RisistanceA hacker skilled enough to remove $850 million. The vulnerability could have been exploited by attackers in order to quickly convert $4500 from a burn transaction to the bridge 223 times.